The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_superg.h

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    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: stable/9/sys/net80211/ieee80211_superg.h 191753 2009-05-02 20:16:55Z sam $
   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         int                     ff_stageqdepth; /* cumulative depth */
   70 };
   71 
   72 void    ieee80211_superg_attach(struct ieee80211com *);
   73 void    ieee80211_superg_detach(struct ieee80211com *);
   74 void    ieee80211_superg_vattach(struct ieee80211vap *);
   75 void    ieee80211_superg_vdetach(struct ieee80211vap *);
   76 
   77 uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
   78 uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
   79 void    ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
   80 int     ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
   81             const struct ieee80211_frame *);
   82 
   83 void    ieee80211_ff_node_init(struct ieee80211_node *);
   84 void    ieee80211_ff_node_cleanup(struct ieee80211_node *);
   85 
   86 struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
   87 void    ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
   88              int quanta);
   89 
   90 static __inline void
   91 ieee80211_ff_flush(struct ieee80211com *ic, int ac)
   92 {
   93         struct ieee80211_superg *sg = ic->ic_superg;
   94 
   95         if (sg != NULL && sg->ff_stageq[ac].depth)
   96                 ieee80211_ff_age(ic, &sg->ff_stageq[ac], 0x7fffffff);
   97 }
   98 
   99 static __inline void
  100 ieee80211_ff_age_all(struct ieee80211com *ic, int quanta)
  101 {
  102         struct ieee80211_superg *sg = ic->ic_superg;
  103 
  104         if (sg != NULL && sg->ff_stageqdepth) {
  105                 if (sg->ff_stageq[WME_AC_VO].depth)
  106                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VO], quanta);
  107                 if (sg->ff_stageq[WME_AC_VI].depth)
  108                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VI], quanta);
  109                 if (sg->ff_stageq[WME_AC_BE].depth)
  110                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BE], quanta);
  111                 if (sg->ff_stageq[WME_AC_BK].depth)
  112                         ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BK], quanta);
  113         }
  114 }
  115 
  116 struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
  117             int, struct ieee80211_key *);
  118 
  119 struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
  120 
  121 static __inline struct mbuf *
  122 ieee80211_decap_fastframe(struct ieee80211vap *vap, struct ieee80211_node *ni,
  123     struct mbuf *m)
  124 {
  125         return IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
  126             ieee80211_ff_decap(ni, m) : m;
  127 }
  128 #endif /* _KERNEL */
  129 #endif /* _NET80211_IEEE80211_SUPERG_H_ */

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