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_proto.h

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    1 /*      $NetBSD: ieee80211_proto.h,v 1.17 2008/07/28 17:54:02 christos Exp $    */
    2 /*-
    3  * Copyright (c) 2001 Atsushi Onoe
    4  * Copyright (c) 2002-2005 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  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * Alternatively, this software may be distributed under the terms of the
   19  * GNU General Public License ("GPL") version 2 as published by the Free
   20  * Software Foundation.
   21  *
   22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   32  *
   33  * $FreeBSD: src/sys/net80211/ieee80211_proto.h,v 1.16 2005/08/13 17:31:48 sam Exp $
   34  */
   35 #ifndef _NET80211_IEEE80211_PROTO_H_
   36 #define _NET80211_IEEE80211_PROTO_H_
   37 
   38 /*
   39  * 802.11 protocol implementation definitions.
   40  */
   41 
   42 enum ieee80211_state {
   43         IEEE80211_S_INIT        = 0,    /* default state */
   44         IEEE80211_S_SCAN        = 1,    /* scanning */
   45         IEEE80211_S_AUTH        = 2,    /* try to authenticate */
   46         IEEE80211_S_ASSOC       = 3,    /* try to assoc */
   47         IEEE80211_S_RUN         = 4     /* associated */
   48 };
   49 #define IEEE80211_S_MAX         ((int)IEEE80211_S_RUN + 1)
   50 
   51 #define IEEE80211_SEND_MGMT(_ic,_ni,_type,_arg) \
   52         ((*(_ic)->ic_send_mgmt)(_ic, _ni, _type, _arg))
   53 
   54 extern  const char *ieee80211_mgt_subtype_name[];
   55 extern  const char *ieee80211_phymode_name[];
   56 
   57 void    ieee80211_proto_attach(struct ieee80211com *);
   58 void    ieee80211_proto_detach(struct ieee80211com *);
   59 
   60 struct ieee80211_node;
   61 int     ieee80211_input(struct ieee80211com *, struct mbuf *,
   62                 struct ieee80211_node *, int, u_int32_t);
   63 int     ieee80211_setup_rates(struct ieee80211_node *ni,
   64                 const u_int8_t *rates, const u_int8_t *xrates, int flags);
   65 void    ieee80211_saveie(u_int8_t **, const u_int8_t *);
   66 void    ieee80211_recv_mgmt(struct ieee80211com *, struct mbuf *,
   67                 struct ieee80211_node *, int, int, u_int32_t);
   68 int     ieee80211_send_nulldata(struct ieee80211_node *);
   69 int     ieee80211_send_probereq(struct ieee80211_node *ni,
   70                 const u_int8_t sa[IEEE80211_ADDR_LEN],
   71                 const u_int8_t da[IEEE80211_ADDR_LEN],
   72                 const u_int8_t bssid[IEEE80211_ADDR_LEN],
   73                 const u_int8_t *ssid, size_t ssidlen,
   74                 const void *optie, size_t optielen);
   75 int     ieee80211_send_mgmt(struct ieee80211com *, struct ieee80211_node *,
   76                 int, int);
   77 int     ieee80211_classify(struct ieee80211com *, struct mbuf *,
   78                 struct ieee80211_node *);
   79 struct mbuf *ieee80211_encap(struct ieee80211com *, struct mbuf *,
   80                 struct ieee80211_node *);
   81 void    ieee80211_pwrsave(struct ieee80211com *, struct ieee80211_node *, 
   82                 struct mbuf *);
   83 
   84 void    ieee80211_reset_erp(struct ieee80211com *);
   85 void    ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
   86 int     ieee80211_iserp_rateset(struct ieee80211com *,
   87                 struct ieee80211_rateset *);
   88 void    ieee80211_set11gbasicrates(struct ieee80211_rateset *,
   89                 enum ieee80211_phymode);
   90 
   91 /*
   92  * Return the size of the 802.11 header for a management or data frame.
   93  */
   94 static __inline int
   95 ieee80211_hdrsize(const void *data)
   96 {
   97         const struct ieee80211_frame *wh = data;
   98         int size = sizeof(struct ieee80211_frame);
   99 
  100         /* NB: we don't handle control frames */
  101         IASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
  102                 ("%s: control frame", __func__));
  103         if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
  104                 size += IEEE80211_ADDR_LEN;
  105         if (IEEE80211_QOS_HAS_SEQ(wh))
  106                 size += sizeof(u_int16_t);
  107         return size;
  108 }
  109 
  110 /*
  111  * Return the size of the 802.11 header; handles any type of frame.
  112  */
  113 static __inline int
  114 ieee80211_anyhdrsize(const void *data)
  115 {
  116         const struct ieee80211_frame *wh = data;
  117 
  118         if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
  119                 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
  120                 case IEEE80211_FC0_SUBTYPE_CTS:
  121                 case IEEE80211_FC0_SUBTYPE_ACK:
  122                         return sizeof(struct ieee80211_frame_ack);
  123                 }
  124                 return sizeof(struct ieee80211_frame_min);
  125         } else
  126                 return ieee80211_hdrsize(data);
  127 }
  128 
  129 /*
  130  * Template for an in-kernel authenticator.  Authenticators
  131  * register with the protocol code and are typically loaded
  132  * as separate modules as needed.
  133  */
  134 struct ieee80211_authenticator {
  135         const char *ia_name;            /* printable name */
  136         int     (*ia_attach)(struct ieee80211com *);
  137         void    (*ia_detach)(struct ieee80211com *);
  138         void    (*ia_node_join)(struct ieee80211com *,
  139                                 struct ieee80211_node *);
  140         void    (*ia_node_leave)(struct ieee80211com *,
  141                                 struct ieee80211_node *);
  142 };
  143 void    ieee80211_authenticator_register(int type,
  144                 const struct ieee80211_authenticator *);
  145 void    ieee80211_authenticator_unregister(int type);
  146 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
  147 
  148 struct ieee80211req;
  149 /*
  150  * Template for an MAC ACL policy module.  Such modules
  151  * register with the protocol code and are passed the sender's
  152  * address of each received frame for validation.
  153  */
  154 struct ieee80211_aclator {
  155         const char *iac_name;           /* printable name */
  156         int     (*iac_attach)(struct ieee80211com *);
  157         void    (*iac_detach)(struct ieee80211com *);
  158         int     (*iac_check)(struct ieee80211com *,
  159                         const u_int8_t mac[IEEE80211_ADDR_LEN]);
  160         int     (*iac_add)(struct ieee80211com *,
  161                         const u_int8_t mac[IEEE80211_ADDR_LEN]);
  162         int     (*iac_remove)(struct ieee80211com *,
  163                         const u_int8_t mac[IEEE80211_ADDR_LEN]);
  164         int     (*iac_flush)(struct ieee80211com *);
  165         int     (*iac_setpolicy)(struct ieee80211com *, int);
  166         int     (*iac_getpolicy)(struct ieee80211com *);
  167         int     (*iac_setioctl)(struct ieee80211com *, struct ieee80211req *);
  168         int     (*iac_getioctl)(struct ieee80211com *, struct ieee80211req *);
  169 };
  170 void    ieee80211_aclator_register(const struct ieee80211_aclator *);
  171 void    ieee80211_aclator_unregister(const struct ieee80211_aclator *);
  172 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
  173 
  174 /* flags for ieee80211_fix_rate() */
  175 #define IEEE80211_F_DOSORT      0x00000001      /* sort rate list */
  176 #define IEEE80211_F_DOFRATE     0x00000002      /* use fixed rate */
  177 #define IEEE80211_F_DONEGO      0x00000004      /* calc negotiated rate */
  178 #define IEEE80211_F_DODEL       0x00000008      /* delete ignore rate */
  179 int     ieee80211_fix_rate(struct ieee80211_node *, int);
  180 
  181 /*
  182  * WME/WMM support.
  183  */
  184 struct wmeParams {
  185         u_int8_t        wmep_acm;
  186         u_int8_t        wmep_aifsn;
  187         u_int8_t        wmep_logcwmin;          /* log2(cwmin) */
  188         u_int8_t        wmep_logcwmax;          /* log2(cwmax) */
  189         u_int8_t        wmep_txopLimit;
  190         u_int8_t        wmep_noackPolicy;       /* 0 (ack), 1 (no ack) */
  191 };
  192 #define IEEE80211_TXOP_TO_US(_txop)     ((_txop)<<5)
  193 #define IEEE80211_US_TO_TXOP(_us)       ((_us)>>5)
  194 
  195 struct chanAccParams {
  196         u_int8_t        cap_info;               /* version of the current set */
  197         struct wmeParams cap_wmeParams[WME_NUM_AC];
  198 };
  199 
  200 struct ieee80211_wme_state {
  201         u_int   wme_flags;
  202 #define WME_F_AGGRMODE  0x00000001      /* STATUS: WME agressive mode */
  203         u_int   wme_hipri_traffic;      /* VI/VO frames in beacon interval */
  204         u_int   wme_hipri_switch_thresh;/* agressive mode switch thresh */
  205         u_int   wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */
  206 
  207         struct wmeParams wme_params[4];         /* from assoc resp for each AC*/
  208         struct chanAccParams wme_wmeChanParams; /* WME params applied to self */
  209         struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
  210         struct chanAccParams wme_chanParams;    /* params applied to self */
  211         struct chanAccParams wme_bssChanParams; /* params bcast to stations */
  212 
  213         int     (*wme_update)(struct ieee80211com *);
  214 };
  215 
  216 void    ieee80211_wme_initparams(struct ieee80211com *);
  217 void    ieee80211_wme_updateparams(struct ieee80211com *);
  218 void    ieee80211_wme_updateparams_locked(struct ieee80211com *);
  219 
  220 #define ieee80211_new_state(_ic, _nstate, _arg) \
  221         (((_ic)->ic_newstate)((_ic), (_nstate), (_arg)))
  222 extern  int ieee80211_compute_duration(const struct ieee80211_frame_min *,
  223                 const struct ieee80211_key *, int,
  224                 uint32_t, int, int, struct ieee80211_duration *,
  225                 struct ieee80211_duration *, int *, int);
  226 void    ieee80211_beacon_miss(struct ieee80211com *);
  227 void    ieee80211_print_essid(const u_int8_t *, int);
  228 void    ieee80211_dump_pkt(const u_int8_t *, int, int, int);
  229 
  230 extern  const char *ieee80211_state_name[IEEE80211_S_MAX];
  231 extern  const char *ieee80211_wme_acnames[];
  232 
  233 /*
  234  * Beacon frames constructed by ieee80211_beacon_alloc
  235  * have the following structure filled in so drivers
  236  * can update the frame later w/ minimal overhead.
  237  */
  238 struct ieee80211_beacon_offsets {
  239         u_int16_t       *bo_caps;       /* capabilities */
  240         u_int8_t        *bo_tim;        /* start of atim/dtim */
  241         u_int8_t        *bo_wme;        /* start of WME parameters */
  242         u_int8_t        *bo_trailer;    /* start of fixed-size trailer */
  243         u_int16_t       bo_tim_len;     /* atim/dtim length in bytes */
  244         u_int16_t       bo_trailer_len; /* trailer length in bytes */
  245 };
  246 struct mbuf *ieee80211_beacon_alloc(struct ieee80211com *,
  247                 struct ieee80211_node *, struct ieee80211_beacon_offsets *);
  248 int     ieee80211_beacon_update(struct ieee80211com *,
  249                 struct ieee80211_node *, struct ieee80211_beacon_offsets *,
  250                 struct mbuf *, int broadcast);
  251 
  252 /*
  253  * Notification methods called from the 802.11 state machine.
  254  * Note that while these are defined here, their implementation
  255  * is OS-specific.
  256  */
  257 void    ieee80211_notify_node_join(struct ieee80211com *,
  258                 struct ieee80211_node *, int newassoc);
  259 void    ieee80211_notify_node_leave(struct ieee80211com *,
  260                 struct ieee80211_node *);
  261 void    ieee80211_notify_scan_done(struct ieee80211com *);
  262 #endif /* !_NET80211_IEEE80211_PROTO_H_ */

Cache object: 9e7414751997e6667dfd01bbd5e2238a


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