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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_node.h

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*      $NetBSD: ieee80211_node.h,v 1.23 2007/12/22 00:51:07 dyoung 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_node.h,v 1.22 2005/08/10 16:22:29 sam Exp $
   34  */
   35 #ifndef _NET80211_IEEE80211_NODE_H_
   36 #define _NET80211_IEEE80211_NODE_H_
   37 
   38 #include <net80211/ieee80211_netbsd.h>
   39 #include <net80211/ieee80211_ioctl.h>           /* for ieee80211_nodestats */
   40 
   41 #ifdef _KERNEL
   42 /*
   43  * Each ieee80211com instance has a single timer that fires once a
   44  * second.  This is used to initiate various work depending on the
   45  * state of the instance: scanning (passive or active), ``transition''
   46  * (waiting for a response to a management frame when operating
   47  * as a station), and node inactivity processing (when operating
   48  * as an AP).  For inactivity processing each node has a timeout
   49  * set in it's ni_inact field that is decremented on each timeout
   50  * and the node is reclaimed when the counter goes to zero.  We
   51  * use different inactivity timeout values depending on whether
   52  * the node is associated and authorized (either by 802.1x or
   53  * open/shared key authentication) or associated but yet to be
   54  * authorized.  The latter timeout is shorter to more aggressively
   55  * reclaim nodes that leave part way through the 802.1x exchange.
   56  */
   57 #define IEEE80211_INACT_WAIT    15              /* inactivity interval (secs) */
   58 #define IEEE80211_INACT_INIT    (30/IEEE80211_INACT_WAIT)       /* initial */
   59 #define IEEE80211_INACT_AUTH    (180/IEEE80211_INACT_WAIT)      /* associated but not authorized */
   60 #define IEEE80211_INACT_RUN     (300/IEEE80211_INACT_WAIT)      /* authorized */
   61 #define IEEE80211_INACT_PROBE   (30/IEEE80211_INACT_WAIT)       /* probe */
   62 #define IEEE80211_INACT_SCAN    (300/IEEE80211_INACT_WAIT)      /* scanned */
   63 
   64 #define IEEE80211_TRANS_WAIT    5               /* mgt frame tx timer (secs) */
   65 
   66 #define IEEE80211_NODE_HASHSIZE 32
   67 /* simple hash is enough for variation of macaddr */
   68 #define IEEE80211_NODE_HASH(addr)       \
   69         (((const u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % \
   70                 IEEE80211_NODE_HASHSIZE)
   71 
   72 struct ieee80211_rsnparms {
   73         u_int8_t        rsn_mcastcipher;        /* mcast/group cipher */
   74         u_int8_t        rsn_mcastkeylen;        /* mcast key length */
   75         u_int8_t        rsn_ucastcipherset;     /* unicast cipher set */
   76         u_int8_t        rsn_ucastcipher;        /* selected unicast cipher */
   77         u_int8_t        rsn_ucastkeylen;        /* unicast key length */
   78         u_int8_t        rsn_keymgmtset;         /* key mangement algorithms */
   79         u_int8_t        rsn_keymgmt;            /* selected key mgmt algo */
   80         u_int16_t       rsn_caps;               /* capabilities */
   81 };
   82 
   83 struct ieee80211_node_table;
   84 struct ieee80211com;
   85 
   86 /*
   87  * Node specific information.  Note that drivers are expected
   88  * to derive from this structure to add device-specific per-node
   89  * state.  This is done by overriding the ic_node_* methods in
   90  * the ieee80211com structure.
   91  */
   92 struct ieee80211_node {
   93         struct ieee80211com     *ni_ic;
   94         struct ieee80211_node_table *ni_table;
   95         TAILQ_ENTRY(ieee80211_node)     ni_list;
   96         LIST_ENTRY(ieee80211_node)      ni_hash;
   97         u_int                   ni_refcnt;
   98         u_int                   ni_scangen;     /* gen# for timeout scan */
   99         u_int8_t                ni_authmode;    /* authentication algorithm */
  100         u_int16_t               ni_flags;       /* special-purpose state */
  101 #define IEEE80211_NODE_AUTH     0x0001          /* authorized for data */
  102 #define IEEE80211_NODE_QOS      0x0002          /* QoS enabled */
  103 #define IEEE80211_NODE_ERP      0x0004          /* ERP enabled */
  104 /* NB: this must have the same value as IEEE80211_FC1_PWR_MGT */
  105 #define IEEE80211_NODE_PWR_MGT  0x0010          /* power save mode enabled */
  106 #define IEEE80211_NODE_AREF     0x0020          /* authentication ref held */
  107         u_int16_t               ni_associd;     /* assoc response */
  108         u_int16_t               ni_txpower;     /* current transmit power */
  109         u_int16_t               ni_vlan;        /* vlan tag */
  110         u_int32_t               *ni_challenge;  /* shared-key challenge */
  111         u_int8_t                *ni_wpa_ie;     /* captured WPA/RSN ie */
  112         u_int8_t                *ni_wme_ie;     /* captured WME ie */
  113         u_int16_t               ni_txseqs[17];  /* tx seq per-tid */
  114         u_int16_t               ni_rxseqs[17];  /* rx seq previous per-tid*/
  115         u_int32_t               ni_rxfragstamp; /* time stamp of last rx frag */
  116         struct mbuf             *ni_rxfrag[3];  /* rx frag reassembly */
  117         struct ieee80211_rsnparms ni_rsn;       /* RSN/WPA parameters */
  118         struct ieee80211_key    ni_ucastkey;    /* unicast key */
  119 
  120         /* hardware */
  121         u_int32_t               ni_rstamp;      /* recv timestamp */
  122         u_int8_t                ni_rssi;        /* recv ssi */
  123 
  124         /* header */
  125         u_int8_t                ni_macaddr[IEEE80211_ADDR_LEN];
  126         u_int8_t                ni_bssid[IEEE80211_ADDR_LEN];
  127 
  128         /* beacon, probe response */
  129         union {
  130                 u_int8_t        data[8];
  131                 u_int64_t       tsf;
  132         } ni_tstamp;                            /* from last rcv'd beacon */
  133         u_int16_t               ni_intval;      /* beacon interval */
  134         u_int16_t               ni_capinfo;     /* capabilities */
  135         u_int8_t                ni_esslen;
  136         u_int8_t                ni_essid[IEEE80211_NWID_LEN];
  137         struct ieee80211_rateset ni_rates;      /* negotiated rate set */
  138         struct ieee80211_channel *ni_chan;      /* XXX multiple uses */
  139         u_int16_t               ni_fhdwell;     /* FH only */
  140         u_int8_t                ni_fhindex;     /* FH only */
  141         u_int8_t                ni_erp;         /* ERP from beacon/probe resp */
  142         u_int16_t               ni_timoff;      /* byte offset to TIM ie */
  143         u_int8_t                ni_dtim_period; /* DTIM period */
  144         u_int8_t                ni_dtim_count;  /* DTIM count for last bcn */
  145 
  146         /* others */
  147         int                     ni_fails;       /* failure count to associate */
  148         short                   ni_inact;       /* inactivity mark count */
  149         short                   ni_inact_reload;/* inactivity reload value */
  150         int                     ni_txrate;      /* index to ni_rates[] */
  151         struct  ifqueue         ni_savedq;      /* ps-poll queue */
  152         struct ieee80211_nodestats ni_stats;    /* per-node statistics */
  153 };
  154 MALLOC_DECLARE(M_80211_NODE);
  155 
  156 #define IEEE80211_NODE_AID(ni)  IEEE80211_AID(ni->ni_associd)
  157 
  158 #define IEEE80211_NODE_STAT(ni,stat)    (ni->ni_stats.ns_##stat++)
  159 #define IEEE80211_NODE_STAT_ADD(ni,stat,v)      (ni->ni_stats.ns_##stat += v)
  160 #define IEEE80211_NODE_STAT_SET(ni,stat,v)      (ni->ni_stats.ns_##stat = v)
  161 
  162 static __inline struct ieee80211_node *
  163 ieee80211_ref_node(struct ieee80211_node *ni)
  164 {
  165         ieee80211_node_incref(ni);
  166         return ni;
  167 }
  168 
  169 static __inline void
  170 ieee80211_unref_node(struct ieee80211_node **ni)
  171 {
  172         ieee80211_node_decref(*ni);
  173         *ni = NULL;                     /* guard against use */
  174 }
  175 
  176 struct ieee80211com;
  177 
  178 void    ieee80211_node_attach(struct ieee80211com *);
  179 void    ieee80211_node_lateattach(struct ieee80211com *);
  180 void    ieee80211_node_detach(struct ieee80211com *);
  181 
  182 static __inline int
  183 ieee80211_node_is_authorized(const struct ieee80211_node *ni)
  184 {
  185         return (ni->ni_flags & IEEE80211_NODE_AUTH);
  186 }
  187 
  188 void    ieee80211_node_authorize(struct ieee80211_node *);
  189 void    ieee80211_node_unauthorize(struct ieee80211_node *);
  190 
  191 void    ieee80211_begin_scan(struct ieee80211com *, int);
  192 int     ieee80211_next_scan(struct ieee80211com *);
  193 void    ieee80211_probe_curchan(struct ieee80211com *, int);
  194 void    ieee80211_create_ibss(struct ieee80211com*, struct ieee80211_channel *);
  195 void    ieee80211_reset_bss(struct ieee80211com *);
  196 void    ieee80211_cancel_scan(struct ieee80211com *);
  197 void    ieee80211_end_scan(struct ieee80211com *);
  198 int     ieee80211_ibss_merge(struct ieee80211_node *);
  199 int     ieee80211_sta_join(struct ieee80211com *, struct ieee80211_node *);
  200 void    ieee80211_sta_leave(struct ieee80211com *, struct ieee80211_node *);
  201 
  202 /*
  203  * Table of ieee80211_node instances.  Each ieee80211com
  204  * has at least one for holding the scan candidates.
  205  * When operating as an access point or in ibss mode there
  206  * is a second table for associated stations or neighbors.
  207  */
  208 struct ieee80211_node_table {
  209         struct ieee80211com     *nt_ic;         /* back reference */
  210         ieee80211_node_lock_t   nt_nodelock;    /* on node table */
  211         TAILQ_HEAD(, ieee80211_node) nt_node;   /* information of all nodes */
  212         LIST_HEAD(, ieee80211_node) nt_hash[IEEE80211_NODE_HASHSIZE];
  213         const char              *nt_name;       /* for debugging */
  214         ieee80211_scan_lock_t   nt_scanlock;    /* on nt_scangen */
  215         u_int                   nt_scangen;     /* gen# for timeout scan */
  216         int                     nt_inact_timer; /* inactivity timer */
  217         int                     nt_inact_init;  /* initial node inact setting */
  218         struct ieee80211_node   **nt_keyixmap;  /* key ix -> node map */
  219         int                     nt_keyixmax;    /* keyixmap size */
  220 
  221         void                    (*nt_timeout)(struct ieee80211_node_table *);
  222 };
  223 void    ieee80211_node_table_reset(struct ieee80211_node_table *);
  224 
  225 struct ieee80211_node *ieee80211_alloc_node(
  226                 struct ieee80211_node_table *, const u_int8_t *);
  227 struct ieee80211_node *ieee80211_tmp_node(struct ieee80211com *,
  228                 const u_int8_t *macaddr);
  229 struct ieee80211_node *ieee80211_dup_bss(struct ieee80211_node_table *,
  230                 const u_int8_t *);
  231 #ifdef IEEE80211_DEBUG_REFCNT
  232 void    ieee80211_free_node_debug(struct ieee80211_node *,
  233                 const char *func, int line);
  234 struct ieee80211_node *ieee80211_find_node_debug(
  235                 struct ieee80211_node_table *, const u_int8_t *,
  236                 const char *func, int line);
  237 struct ieee80211_node * ieee80211_find_rxnode_debug(
  238                 struct ieee80211com *, const struct ieee80211_frame_min *,
  239                 const char *func, int line);
  240 struct ieee80211_node * ieee80211_find_rxnode_withkey_debug(
  241                 struct ieee80211com *,
  242                 const struct ieee80211_frame_min *, u_int16_t keyix,
  243                 const char *func, int line);
  244 struct ieee80211_node *ieee80211_find_txnode_debug(
  245                 struct ieee80211com *, const u_int8_t *,
  246                 const char *func, int line);
  247 struct ieee80211_node *ieee80211_find_node_with_channel_debug(
  248                 struct ieee80211_node_table *, const u_int8_t *macaddr,
  249                 struct ieee80211_channel *, const char *func, int line);
  250 struct ieee80211_node *ieee80211_find_node_with_ssid_debug(
  251                 struct ieee80211_node_table *, const u_int8_t *macaddr,
  252                 u_int ssidlen, const u_int8_t *ssid,
  253                 const char *func, int line);
  254 #define ieee80211_free_node(ni) \
  255         ieee80211_free_node_debug(ni, __func__, __LINE__)
  256 #define ieee80211_find_node(nt, mac) \
  257         ieee80211_find_node_debug(nt, mac, __func__, __LINE__)
  258 #define ieee80211_find_rxnode(nt, wh) \
  259         ieee80211_find_rxnode_debug(nt, wh, __func__, __LINE__)
  260 #define ieee80211_find_rxnode_withkey(nt, wh, keyix) \
  261         ieee80211_find_rxnode_withkey_debug(nt, wh, keyix, __func__, __LINE__)
  262 #define ieee80211_find_txnode(nt, mac) \
  263         ieee80211_find_txnode_debug(nt, mac, __func__, __LINE__)
  264 #define ieee80211_find_node_with_channel(nt, mac, c) \
  265         ieee80211_find_node_with_channel_debug(nt, mac, c, __func__, __LINE__)
  266 #define ieee80211_find_node_with_ssid(nt, mac, sl, ss) \
  267         ieee80211_find_node_with_ssid_debug(nt, mac, sl, ss, __func__, __LINE__)
  268 #else
  269 void    ieee80211_free_node(struct ieee80211_node *);
  270 struct ieee80211_node *ieee80211_find_node(
  271                 struct ieee80211_node_table *, const u_int8_t *);
  272 struct ieee80211_node * ieee80211_find_rxnode(
  273                 struct ieee80211com *, const struct ieee80211_frame_min *);
  274 struct ieee80211_node * ieee80211_find_rxnode_withkey(struct ieee80211com *,
  275                 const struct ieee80211_frame_min *, u_int16_t keyix);
  276 struct ieee80211_node *ieee80211_find_txnode(
  277                 struct ieee80211com *, const u_int8_t *);
  278 struct ieee80211_node *ieee80211_find_node_with_channel(
  279                 struct ieee80211_node_table *, const u_int8_t *macaddr,
  280                 struct ieee80211_channel *);
  281 struct ieee80211_node *ieee80211_find_node_with_ssid(
  282                 struct ieee80211_node_table *, const u_int8_t *macaddr,
  283                 u_int ssidlen, const u_int8_t *ssid);
  284 #endif
  285 int     ieee80211_node_delucastkey(struct ieee80211_node *);
  286 
  287 struct ieee80211_node *ieee80211_refine_node_for_beacon(
  288                 struct ieee80211com *, struct ieee80211_node *,
  289                 struct ieee80211_channel *, const u_int8_t *ssid);
  290 typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
  291 void    ieee80211_iterate_nodes(struct ieee80211_node_table *,
  292                 ieee80211_iter_func *, void *);
  293 
  294 void    ieee80211_dump_node(struct ieee80211_node_table *,
  295                 struct ieee80211_node *);
  296 void    ieee80211_dump_nodes(struct ieee80211_node_table *);
  297 
  298 struct ieee80211_node *ieee80211_fakeup_adhoc_node(
  299                 struct ieee80211_node_table *, const u_int8_t macaddr[]);
  300 void    ieee80211_node_join(struct ieee80211com *, struct ieee80211_node *,int);
  301 void    ieee80211_node_leave(struct ieee80211com *, struct ieee80211_node *);
  302 u_int8_t ieee80211_getrssi(struct ieee80211com *ic);
  303 
  304 /*
  305  * Parameters supplied when adding/updating an entry in a
  306  * scan cache.  Pointer variables should be set to NULL
  307  * if no data is available.  Pointer references can be to
  308  * local data; any information that is saved will be copied.
  309  * All multi-byte values must be in host byte order.
  310  */
  311 struct ieee80211_scanparams {
  312         u_int16_t       capinfo;        /* 802.11 capabilities */
  313         u_int16_t       fhdwell;        /* FHSS dwell interval */
  314         u_int8_t        chan;           /* */
  315         u_int8_t        bchan;
  316         u_int8_t        fhindex;
  317         u_int8_t        erp;
  318         u_int16_t       bintval;
  319         u_int8_t        timoff;
  320         u_int8_t        *tim;
  321         u_int8_t        *tstamp;
  322         u_int8_t        *country;
  323         u_int8_t        *ssid;
  324         u_int8_t        *rates;
  325         u_int8_t        *xrates;
  326         u_int8_t        *wpa;
  327         u_int8_t        *wme;
  328 };
  329 
  330 void    ieee80211_add_scan(struct ieee80211com *,
  331                 const struct ieee80211_scanparams *,
  332                 const struct ieee80211_frame *,
  333                 int subtype, int rssi, int rstamp);
  334 void ieee80211_init_neighbor(struct ieee80211com *, struct ieee80211_node *,
  335                 const struct ieee80211_frame *,
  336                 const struct ieee80211_scanparams *, int);
  337 struct ieee80211_node *ieee80211_add_neighbor(struct ieee80211com *,
  338                 const struct ieee80211_frame *,
  339                 const struct ieee80211_scanparams *);
  340 #endif /* _KERNEL */
  341 #endif /* !_NET80211_IEEE80211_NODE_H_ */

Cache object: c2d75f00c50f1b49df744debea0cefe1


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.