include/sys/net80211_ht.h

   1 /*
   2  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*
   7  * Copyright (c) 2007 Sam Leffler, Errno Consulting
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #ifndef _SYS_NET80211_HT_H
  32 #define _SYS_NET80211_HT_H
  33
  34 /*
  35  * 802.11n protocol implementation definitions.
  36  */
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 struct ieee80211com;
  43 struct ieee80211_node;
  44 struct ieee80211_channel;
  45
  46 #define IEEE80211_AGGR_BAWMAX   64      /* max block ack window size */
  47 /* threshold for aging overlapping non-HT bss */
  48 #define IEEE80211_NONHT_PRESENT_AGE     (60*1000)       /* msec */
  49
  50 #define M_AMPDU                 0x8000  /* A-MPDU processing done */
  51 #define M_WEP                   0x4000  /* WEP done by hardware */
  52 #define M_80211_RX              (M_AMPDU | M_WEP)
  53
  54 typedef uint16_t ieee80211_seq;
  55
  56 struct ieee80211_tx_ampdu {
  57         ushort_t        txa_flags;
  58 #define IEEE80211_AGGR_IMMEDIATE        0x0001  /* BA policy */
  59 #define IEEE80211_AGGR_XCHGPEND         0x0002  /* ADDBA response pending */
  60 #define IEEE80211_AGGR_RUNNING          0x0004  /* ADDBA response received */
  61 #define IEEE80211_AGGR_SETUP            0x0008  /* deferred state setup */
  62 #define IEEE80211_AGGR_NAK              0x0010  /* peer NAK'd ADDBA request */
  63         uint8_t         txa_ac;
  64         uint8_t         txa_token;              /* dialog token */
  65         int             txa_qbytes;             /* data queued (bytes) */
  66         short           txa_qframes;            /* data queued (frames) */
  67         ieee80211_seq   txa_seqstart;
  68         ieee80211_seq   txa_start;
  69         uint16_t        txa_wnd;                /* BA window size */
  70         uint8_t         txa_attempts;           /* # setup attempts */
  71         clock_t         txa_lastrequest;        /* time of last ADDBA request */
  72         timeout_id_t    txa_timer;
  73 };
  74
  75 /* return non-zero if AMPDU tx for the TID is running */
  76 #define IEEE80211_AMPDU_RUNNING(tap) \
  77         (((tap)->txa_flags & IEEE80211_AGGR_RUNNING) != 0)
  78
  79 /* return non-zero if AMPDU tx for the TID is running or started */
  80 #define IEEE80211_AMPDU_REQUESTED(tap) \
  81         (((tap)->txa_flags & (IEEE80211_AGGR_RUNNING |  \
  82         IEEE80211_AGGR_XCHGPEND | IEEE80211_AGGR_NAK)) != 0)
  83
  84 struct ieee80211_rx_ampdu {
  85         int             rxa_flags;
  86         int             rxa_qbytes;     /* data queued (bytes) */
  87         short           rxa_qframes;    /* data queued (frames) */
  88         ieee80211_seq   rxa_seqstart;
  89         ieee80211_seq   rxa_start;      /* start of current BA window */
  90         uint16_t        rxa_wnd;        /* BA window size */
  91         clock_t         rxa_age;        /* age of oldest frame in window */
  92         int             rxa_nframes;    /* frames since ADDBA */
  93         mblk_t          *rxa_m[IEEE80211_AGGR_BAWMAX];
  94 };
  95
  96 void ieee80211_ht_attach(struct ieee80211com *);
  97 void ieee80211_ht_detach(struct ieee80211com *);
  98
  99 void ieee80211_ht_announce(struct ieee80211com *);
 100
 101 extern const int ieee80211_htrates[16];
 102 const struct ieee80211_htrateset *ieee80211_get_suphtrates(
 103     struct ieee80211com *, const struct ieee80211_channel *);
 104
 105 int ieee80211_setup_htrates(struct ieee80211_node *,
 106     const uint8_t *htcap, int flags);
 107 void ieee80211_setup_basic_htrates(struct ieee80211_node *,
 108     const uint8_t *htinfo);
 109
 110 mblk_t *ieee80211_decap_amsdu(struct ieee80211_node *, mblk_t *);
 111
 112 int ieee80211_ampdu_reorder(struct ieee80211_node *, mblk_t *);
 113 void ieee80211_recv_bar(struct ieee80211_node *, mblk_t *);
 114 void ieee80211_ht_node_init(struct ieee80211_node *, const uint8_t *);
 115 void ieee80211_ht_node_cleanup(struct ieee80211_node *);
 116 struct ieee80211_channel *ieee80211_ht_adjust_channel(struct ieee80211com *,
 117     struct ieee80211_channel *, int);
 118
 119 void ieee80211_ht_wds_init(struct ieee80211_node *);
 120 void ieee80211_ht_node_join(struct ieee80211_node *);
 121 void ieee80211_ht_node_leave(struct ieee80211_node *);
 122 void ieee80211_htinfo_update(struct ieee80211com *, int protmode);
 123 void ieee80211_ht_timeout(struct ieee80211com *);
 124 void ieee80211_parse_htcap(struct ieee80211_node *, const uint8_t *);
 125 void ieee80211_parse_htinfo(struct ieee80211_node *, const uint8_t *);
 126 void ieee80211_recv_action(struct ieee80211_node *,
 127     const uint8_t *, const uint8_t *);
 128 int ieee80211_ampdu_request(struct ieee80211_node *,
 129     struct ieee80211_tx_ampdu *);
 130 void ieee80211_ampdu_stop(struct ieee80211_node *,
 131     struct ieee80211_tx_ampdu *);
 132 int ieee80211_send_bar(struct ieee80211_node *,
 133     const struct ieee80211_tx_ampdu *);
 134 int ieee80211_send_action(struct ieee80211_node *, int, int, uint16_t [4]);
 135
 136 uint8_t *ieee80211_add_htcap(uint8_t *, struct ieee80211_node *);
 137 uint8_t *ieee80211_add_htcap_vendor(uint8_t *, struct ieee80211_node *);
 138 uint8_t *ieee80211_add_htinfo(uint8_t *, struct ieee80211_node *);
 139 uint8_t *ieee80211_add_htinfo_vendor(uint8_t *, struct ieee80211_node *);
 140
 141 struct ieee80211_beacon_offsets;
 142 void ieee80211_ht_update_beacon(struct ieee80211com *,
 143     struct ieee80211_beacon_offsets *);
 144
 145 #ifdef  __cplusplus
 146 }
 147 #endif
 148
 149 #endif /* _SYS_NET80211_HT_H */