sys/netproto/802_11/ieee80211_superg.h

   1 /*-
   2  * Copyright (c) 2009 Sam Leffler, Errno Consulting
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * 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 copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD$
  26  */
  27 #ifndef _NET80211_IEEE80211_SUPERG_H_
  28 #define _NET80211_IEEE80211_SUPERG_H_
  29
  30 /*
  31  * Atheros' 802.11 SuperG protocol support.
  32  */
  33
  34 /*
  35  * Atheros advanced capability information element.
  36  */
  37 struct ieee80211_ath_ie {
  38         uint8_t         ath_id;                 /* IEEE80211_ELEMID_VENDOR */
  39         uint8_t         ath_len;                /* length in bytes */
  40         uint8_t         ath_oui[3];             /* ATH_OUI */
  41         uint8_t         ath_oui_type;           /* ATH_OUI_TYPE */
  42         uint8_t         ath_oui_subtype;        /* ATH_OUI_SUBTYPE */
  43         uint8_t         ath_version;            /* spec revision */
  44         uint8_t         ath_capability;         /* capability info */
  45 #define ATHEROS_CAP_TURBO_PRIME         0x01    /* dynamic turbo--aka Turbo' */
  46 #define ATHEROS_CAP_COMPRESSION         0x02    /* data compression */
  47 #define ATHEROS_CAP_FAST_FRAME          0x04    /* fast (jumbo) frames */
  48 #define ATHEROS_CAP_XR                  0x08    /* Xtended Range support */
  49 #define ATHEROS_CAP_AR                  0x10    /* Advanded Radar support */
  50 #define ATHEROS_CAP_BURST               0x20    /* Bursting - not negotiated */
  51 #define ATHEROS_CAP_WME                 0x40    /* CWMin tuning */
  52 #define ATHEROS_CAP_BOOST               0x80    /* use turbo/!turbo mode */
  53         uint8_t         ath_defkeyix[2];
  54 } __packed;
  55
  56 #define ATH_OUI_VERSION         0x00
  57 #define ATH_OUI_SUBTYPE         0x01
  58
  59 #ifdef _KERNEL
  60 struct ieee80211_stageq {
  61         struct mbuf             *head;          /* frames linked w/ m_nextpkt */
  62         struct mbuf             *tail;          /* last frame in queue */
  63         int                     depth;          /* # items on head */
  64 };
  65
  66 struct ieee80211_superg {
  67         /* fast-frames staging q */
  68         struct ieee80211_stageq ff_stageq[WME_NUM_AC];
  69 };
  70
  71 void    ieee80211_superg_attach(struct ieee80211com *);
  72 void    ieee80211_superg_detach(struct ieee80211com *);
  73 void    ieee80211_superg_vattach(struct ieee80211vap *);
  74 void    ieee80211_superg_vdetach(struct ieee80211vap *);
  75
  76 uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
  77 uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
  78 void    ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
  79 int     ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
  80             const struct ieee80211_frame *);
  81
  82 void    ieee80211_ff_node_init(struct ieee80211_node *);
  83 void    ieee80211_ff_node_cleanup(struct ieee80211_node *);
  84
  85 static inline int
  86 ieee80211_amsdu_tx_ok(struct ieee80211_node *ni)
  87 {
  88
  89         /* First: software A-MSDU transmit? */
  90         if ((ni->ni_ic->ic_caps & IEEE80211_C_SWAMSDUTX) == 0)
  91                 return (0);
  92
  93         /* Next: does the VAP have AMSDU TX enabled? */
  94         if ((ni->ni_vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX) == 0)
  95                 return (0);
  96
  97         /* Next: 11n node? (assumed that A-MSDU TX to HT nodes is ok */
  98         if ((ni->ni_flags & IEEE80211_NODE_HT) == 0)
  99                 return (0);
 100
 101         /* ok, we can at least /do/ AMSDU to this node */
 102         return (1);
 103 }
 104
 105 struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m);
 106 struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
 107 void    ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
 108              int quanta);
 109
 110 /*
 111  * See ieee80211_ff_age() for a description of the locking
 112  * expectation here.
 113  */
 114 static __inline void
 115 ieee80211_ff_flush(struct ieee80211com *ic, int ac)
 116 {
 117         struct ieee80211_superg *sg = ic->ic_superg;
 118
 119         if (sg != NULL && sg->ff_stageq[ac].depth)
 120                 ieee80211_ff_age(ic, &sg->ff_stageq[ac], 0x7fffffff);
 121 }
 122
 123 /*
 124  * See ieee80211_ff_age() for a description of the locking
 125  * expectation here.
 126  */
 127 static __inline void
 128 ieee80211_ff_age_all(struct ieee80211com *ic, int quanta)
 129 {
 130         struct ieee80211_superg *sg = ic->ic_superg;
 131
 132         if (sg != NULL) {
 133                 if (sg->ff_stageq[WME_AC_VO].depth)
 134                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VO], quanta);
 135                 if (sg->ff_stageq[WME_AC_VI].depth)
 136                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VI], quanta);
 137                 if (sg->ff_stageq[WME_AC_BE].depth)
 138                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BE], quanta);
 139                 if (sg->ff_stageq[WME_AC_BK].depth)
 140                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BK], quanta);
 141         }
 142 }
 143
 144 struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
 145             int, struct ieee80211_key *);
 146 struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1,
 147             int hdrspace, struct ieee80211_key *key);
 148
 149 struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
 150
 151 static __inline struct mbuf *
 152 ieee80211_decap_fastframe(struct ieee80211vap *vap, struct ieee80211_node *ni,
 153     struct mbuf *m)
 154 {
 155         return IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
 156             ieee80211_ff_decap(ni, m) : m;
 157 }
 158 #endif /* _KERNEL */
 159 #endif /* _NET80211_IEEE80211_SUPERG_H_ */