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  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2009 Sam Leffler, Errno Consulting
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  *
   27  * $FreeBSD: stable/12/sys/net80211/ieee80211_superg.h 326272 2017-11-27 15:23:17Z pfg $
   28  */
   29 #ifndef _NET80211_IEEE80211_SUPERG_H_
   30 #define _NET80211_IEEE80211_SUPERG_H_
   31 
   32 /*
   33  * Atheros' 802.11 SuperG protocol support.
   34  */
   35 
   36 /*
   37  * Atheros advanced capability information element.
   38  */
   39 struct ieee80211_ath_ie {
   40         uint8_t         ath_id;                 /* IEEE80211_ELEMID_VENDOR */
   41         uint8_t         ath_len;                /* length in bytes */
   42         uint8_t         ath_oui[3];             /* ATH_OUI */
   43         uint8_t         ath_oui_type;           /* ATH_OUI_TYPE */
   44         uint8_t         ath_oui_subtype;        /* ATH_OUI_SUBTYPE */
   45         uint8_t         ath_version;            /* spec revision */
   46         uint8_t         ath_capability;         /* capability info */
   47 #define ATHEROS_CAP_TURBO_PRIME         0x01    /* dynamic turbo--aka Turbo' */
   48 #define ATHEROS_CAP_COMPRESSION         0x02    /* data compression */
   49 #define ATHEROS_CAP_FAST_FRAME          0x04    /* fast (jumbo) frames */
   50 #define ATHEROS_CAP_XR                  0x08    /* Xtended Range support */
   51 #define ATHEROS_CAP_AR                  0x10    /* Advanded Radar support */
   52 #define ATHEROS_CAP_BURST               0x20    /* Bursting - not negotiated */
   53 #define ATHEROS_CAP_WME                 0x40    /* CWMin tuning */
   54 #define ATHEROS_CAP_BOOST               0x80    /* use turbo/!turbo mode */
   55         uint8_t         ath_defkeyix[2];
   56 } __packed;
   57 
   58 #define ATH_OUI_VERSION         0x00
   59 #define ATH_OUI_SUBTYPE         0x01
   60 
   61 #ifdef _KERNEL
   62 struct ieee80211_stageq {
   63         struct mbuf             *head;          /* frames linked w/ m_nextpkt */
   64         struct mbuf             *tail;          /* last frame in queue */
   65         int                     depth;          /* # items on head */
   66 };
   67 
   68 struct ieee80211_superg {
   69         /* fast-frames staging q */
   70         struct ieee80211_stageq ff_stageq[WME_NUM_AC];
   71         /* flush queues automatically */
   72         struct timeout_task     ff_qtimer;
   73 };
   74 
   75 void    ieee80211_superg_attach(struct ieee80211com *);
   76 void    ieee80211_superg_detach(struct ieee80211com *);
   77 void    ieee80211_superg_vattach(struct ieee80211vap *);
   78 void    ieee80211_superg_vdetach(struct ieee80211vap *);
   79 
   80 uint8_t *ieee80211_add_ath(uint8_t *, uint8_t, ieee80211_keyix);
   81 uint8_t *ieee80211_add_athcaps(uint8_t *, const struct ieee80211_node *);
   82 void    ieee80211_parse_ath(struct ieee80211_node *, uint8_t *);
   83 int     ieee80211_parse_athparams(struct ieee80211_node *, uint8_t *,
   84             const struct ieee80211_frame *);
   85 
   86 void    ieee80211_ff_node_init(struct ieee80211_node *);
   87 void    ieee80211_ff_node_cleanup(struct ieee80211_node *);
   88 
   89 static inline int
   90 ieee80211_amsdu_tx_ok(struct ieee80211_node *ni)
   91 {
   92 
   93         /* First: software A-MSDU transmit? */
   94         if ((ni->ni_ic->ic_caps & IEEE80211_C_SWAMSDUTX) == 0)
   95                 return (0);
   96 
   97         /* Next: does the VAP have AMSDU TX enabled? */
   98         if ((ni->ni_vap->iv_flags_ht & IEEE80211_FHT_AMSDU_TX) == 0)
   99                 return (0);
  100 
  101         /* Next: 11n node? (assumed that A-MSDU TX to HT nodes is ok */
  102         if ((ni->ni_flags & IEEE80211_NODE_HT) == 0)
  103                 return (0);
  104 
  105         /* ok, we can at least /do/ AMSDU to this node */
  106         return (1);
  107 }
  108 
  109 struct mbuf * ieee80211_amsdu_check(struct ieee80211_node *ni, struct mbuf *m);
  110 struct mbuf *ieee80211_ff_check(struct ieee80211_node *, struct mbuf *);
  111 void    ieee80211_ff_age(struct ieee80211com *, struct ieee80211_stageq *,
  112              int quanta);
  113 
  114 static __inline void
  115 ieee80211_ff_age_all(struct ieee80211com *ic, int quanta)
  116 {
  117         struct ieee80211_superg *sg = ic->ic_superg;
  118 
  119         if (sg != NULL) {
  120                 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VO], quanta);
  121                 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_VI], quanta);
  122                 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BE], quanta);
  123                 ieee80211_ff_age(ic, &sg->ff_stageq[WME_AC_BK], quanta);
  124         }
  125 }
  126 
  127 static __inline void
  128 ieee80211_ff_flush(struct ieee80211com *ic, int ac)
  129 {
  130         struct ieee80211_superg *sg = ic->ic_superg;
  131 
  132         if (sg != NULL)
  133                 ieee80211_ff_age(ic, &sg->ff_stageq[ac], 0x7fffffff);
  134 }
  135 
  136 static __inline void
  137 ieee80211_ff_flush_all(struct ieee80211com *ic)
  138 {
  139         ieee80211_ff_age_all(ic, 0x7fffffff);
  140 }
  141 
  142 struct mbuf *ieee80211_ff_encap(struct ieee80211vap *, struct mbuf *,
  143             int, struct ieee80211_key *);
  144 struct mbuf * ieee80211_amsdu_encap(struct ieee80211vap *vap, struct mbuf *m1,
  145             int hdrspace, struct ieee80211_key *key);
  146 
  147 struct mbuf *ieee80211_ff_decap(struct ieee80211_node *, struct mbuf *);
  148 
  149 static __inline struct mbuf *
  150 ieee80211_decap_fastframe(struct ieee80211vap *vap, struct ieee80211_node *ni,
  151     struct mbuf *m)
  152 {
  153         return IEEE80211_ATH_CAP(vap, ni, IEEE80211_NODE_FF) ?
  154             ieee80211_ff_decap(ni, m) : m;
  155 }
  156 #endif /* _KERNEL */
  157 #endif /* _NET80211_IEEE80211_SUPERG_H_ */

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