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_freebsd.h

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    1 /*-
    2  * Copyright (c) 2003-2005 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  * 3. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission.
   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: releng/6.0/sys/net80211/ieee80211_freebsd.h 149772 2005-09-03 22:40:02Z sam $
   28  */
   29 #ifndef _NET80211_IEEE80211_FREEBSD_H_
   30 #define _NET80211_IEEE80211_FREEBSD_H_
   31 
   32 /*
   33  * Beacon locking definitions.
   34  */
   35 typedef struct mtx ieee80211_beacon_lock_t;
   36 #define IEEE80211_BEACON_LOCK_INIT(_ic, _name) \
   37         mtx_init(&(_ic)->ic_beaconlock, _name, "802.11 beacon lock", MTX_DEF)
   38 #define IEEE80211_BEACON_LOCK_DESTROY(_ic) mtx_destroy(&(_ic)->ic_beaconlock)
   39 #define IEEE80211_BEACON_LOCK(_ic)         mtx_lock(&(_ic)->ic_beaconlock)
   40 #define IEEE80211_BEACON_UNLOCK(_ic)       mtx_unlock(&(_ic)->ic_beaconlock)
   41 #define IEEE80211_BEACON_LOCK_ASSERT(_ic) \
   42         mtx_assert(&(_ic)->ic_beaconlock, MA_OWNED)
   43 
   44 /*
   45  * Node locking definitions.
   46  * NB: MTX_DUPOK is because we don't generate per-interface strings.
   47  */
   48 typedef struct mtx ieee80211_node_lock_t;
   49 #define IEEE80211_NODE_LOCK_INIT(_nt, _name) \
   50         mtx_init(&(_nt)->nt_nodelock, _name, "802.11 node table", \
   51                 MTX_DEF | MTX_DUPOK)
   52 #define IEEE80211_NODE_LOCK_DESTROY(_nt)        mtx_destroy(&(_nt)->nt_nodelock)
   53 #define IEEE80211_NODE_LOCK(_nt)                mtx_lock(&(_nt)->nt_nodelock)
   54 #define IEEE80211_NODE_IS_LOCKED(_nt)           mtx_owned(&(_nt)->nt_nodelock)
   55 #define IEEE80211_NODE_UNLOCK(_nt)              mtx_unlock(&(_nt)->nt_nodelock)
   56 #define IEEE80211_NODE_LOCK_ASSERT(_nt) \
   57         mtx_assert(&(_nt)->nt_nodelock, MA_OWNED)
   58 
   59 /*
   60  * Node table scangen locking definitions.
   61  */
   62 typedef struct mtx ieee80211_scan_lock_t;
   63 #define IEEE80211_SCAN_LOCK_INIT(_nt, _name) \
   64         mtx_init(&(_nt)->nt_scanlock, _name, "802.11 scangen", MTX_DEF)
   65 #define IEEE80211_SCAN_LOCK_DESTROY(_nt)        mtx_destroy(&(_nt)->nt_scanlock)
   66 #define IEEE80211_SCAN_LOCK(_nt)                mtx_lock(&(_nt)->nt_scanlock)
   67 #define IEEE80211_SCAN_UNLOCK(_nt)              mtx_unlock(&(_nt)->nt_scanlock)
   68 #define IEEE80211_SCAN_LOCK_ASSERT(_nt) \
   69         mtx_assert(&(_nt)->nt_scanlock, MA_OWNED)
   70 
   71 /*
   72  * Per-node power-save queue definitions. 
   73  */
   74 #define IEEE80211_NODE_SAVEQ_INIT(_ni, _name) do {              \
   75         mtx_init(&(_ni)->ni_savedq.ifq_mtx, _name, "802.11 ps queue", MTX_DEF);\
   76         (_ni)->ni_savedq.ifq_maxlen = IEEE80211_PS_MAX_QUEUE;   \
   77 } while (0)
   78 #define IEEE80211_NODE_SAVEQ_DESTROY(_ni) \
   79         mtx_destroy(&(_ni)->ni_savedq.ifq_mtx)
   80 #define IEEE80211_NODE_SAVEQ_QLEN(_ni) \
   81         _IF_QLEN(&(_ni)->ni_savedq)
   82 #define IEEE80211_NODE_SAVEQ_LOCK(_ni) do {     \
   83         IF_LOCK(&(_ni)->ni_savedq);                             \
   84 } while (0)
   85 #define IEEE80211_NODE_SAVEQ_UNLOCK(_ni) do {   \
   86         IF_UNLOCK(&(_ni)->ni_savedq);                           \
   87 } while (0)
   88 #define IEEE80211_NODE_SAVEQ_DEQUEUE(_ni, _m, _qlen) do {       \
   89         IEEE80211_NODE_SAVEQ_LOCK(_ni);                         \
   90         _IF_DEQUEUE(&(_ni)->ni_savedq, _m);                     \
   91         (_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni);               \
   92         IEEE80211_NODE_SAVEQ_UNLOCK(_ni);                       \
   93 } while (0)
   94 #define IEEE80211_NODE_SAVEQ_DRAIN(_ni, _qlen) do {             \
   95         IEEE80211_NODE_SAVEQ_LOCK(_ni);                         \
   96         (_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni);               \
   97         _IF_DRAIN(&(_ni)->ni_savedq);                           \
   98         IEEE80211_NODE_SAVEQ_UNLOCK(_ni);                       \
   99 } while (0)
  100 /* XXX could be optimized */
  101 #define _IEEE80211_NODE_SAVEQ_DEQUEUE_HEAD(_ni, _m) do {        \
  102         _IF_DEQUEUE(&(_ni)->ni_savedq, m);                      \
  103 } while (0)
  104 #define _IEEE80211_NODE_SAVEQ_ENQUEUE(_ni, _m, _qlen, _age) do {\
  105         (_m)->m_nextpkt = NULL;                                 \
  106         if ((_ni)->ni_savedq.ifq_tail != NULL) {                \
  107                 _age -= M_AGE_GET((_ni)->ni_savedq.ifq_tail);   \
  108                 (_ni)->ni_savedq.ifq_tail->m_nextpkt = (_m);    \
  109         } else {                                                \
  110                 (_ni)->ni_savedq.ifq_head = (_m);               \
  111         }                                                       \
  112         M_AGE_SET(_m, _age);                                    \
  113         (_ni)->ni_savedq.ifq_tail = (_m);                       \
  114         (_qlen) = ++(_ni)->ni_savedq.ifq_len;                   \
  115 } while (0)
  116 
  117 /*
  118  * 802.1x MAC ACL database locking definitions.
  119  */
  120 typedef struct mtx acl_lock_t;
  121 #define ACL_LOCK_INIT(_as, _name) \
  122         mtx_init(&(_as)->as_lock, _name, "802.11 ACL", MTX_DEF)
  123 #define ACL_LOCK_DESTROY(_as)           mtx_destroy(&(_as)->as_lock)
  124 #define ACL_LOCK(_as)                   mtx_lock(&(_as)->as_lock)
  125 #define ACL_UNLOCK(_as)                 mtx_unlock(&(_as)->as_lock)
  126 #define ACL_LOCK_ASSERT(_as) \
  127         mtx_assert((&(_as)->as_lock), MA_OWNED)
  128 
  129 /*
  130  * Node reference counting definitions.
  131  *
  132  * ieee80211_node_initref       initialize the reference count to 1
  133  * ieee80211_node_incref        add a reference
  134  * ieee80211_node_decref        remove a reference
  135  * ieee80211_node_dectestref    remove a reference and return 1 if this
  136  *                              is the last reference, otherwise 0
  137  * ieee80211_node_refcnt        reference count for printing (only)
  138  */
  139 #include <machine/atomic.h>
  140 
  141 #define ieee80211_node_initref(_ni) \
  142         do { ((_ni)->ni_refcnt = 1); } while (0)
  143 #define ieee80211_node_incref(_ni) \
  144         atomic_add_int(&(_ni)->ni_refcnt, 1)
  145 #define ieee80211_node_decref(_ni) \
  146         atomic_subtract_int(&(_ni)->ni_refcnt, 1)
  147 struct ieee80211_node;
  148 int     ieee80211_node_dectestref(struct ieee80211_node *ni);
  149 #define ieee80211_node_refcnt(_ni)      (_ni)->ni_refcnt
  150 
  151 struct mbuf *ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen);
  152 #define M_LINK0         M_PROTO1                /* WEP requested */
  153 #define M_PWR_SAV       M_PROTO4                /* bypass PS handling */
  154 #define M_MORE_DATA     M_PROTO5                /* more data frames to follow */
  155 /*
  156  * Encode WME access control bits in the PROTO flags.
  157  * This is safe since it's passed directly in to the
  158  * driver and there's no chance someone else will clobber
  159  * them on us.
  160  */
  161 #define M_WME_AC_MASK   (M_PROTO2|M_PROTO3)
  162 /* XXX 5 is wrong if M_PROTO* are redefined */
  163 #define M_WME_AC_SHIFT  5
  164 
  165 #define M_WME_SETAC(m, ac) \
  166         ((m)->m_flags = ((m)->m_flags &~ M_WME_AC_MASK) | \
  167                 ((ac) << M_WME_AC_SHIFT))
  168 #define M_WME_GETAC(m)  (((m)->m_flags >> M_WME_AC_SHIFT) & 0x3)
  169 
  170 /*
  171  * Mbufs on the power save queue are tagged with an age and
  172  * timed out.  We reuse the hardware checksum field in the
  173  * mbuf packet header to store this data.
  174  */
  175 #define M_AGE_SET(m,v)          (m->m_pkthdr.csum_data = v)
  176 #define M_AGE_GET(m)            (m->m_pkthdr.csum_data)
  177 #define M_AGE_SUB(m,adj)        (m->m_pkthdr.csum_data -= adj)
  178 
  179 void    get_random_bytes(void *, size_t);
  180 
  181 struct ieee80211com;
  182 
  183 void    ieee80211_sysctl_attach(struct ieee80211com *);
  184 void    ieee80211_sysctl_detach(struct ieee80211com *);
  185 
  186 void    ieee80211_load_module(const char *);
  187 
  188 /* XXX this stuff belongs elsewhere */
  189 /*
  190  * Message formats for messages from the net80211 layer to user
  191  * applications via the routing socket.  These messages are appended
  192  * to an if_announcemsghdr structure.
  193  */
  194 struct ieee80211_join_event {
  195         uint8_t         iev_addr[6];
  196 };
  197 
  198 struct ieee80211_leave_event {
  199         uint8_t         iev_addr[6];
  200 };
  201 
  202 struct ieee80211_replay_event {
  203         uint8_t         iev_src[6];     /* src MAC */
  204         uint8_t         iev_dst[6];     /* dst MAC */
  205         uint8_t         iev_cipher;     /* cipher type */
  206         uint8_t         iev_keyix;      /* key id/index */
  207         uint64_t        iev_keyrsc;     /* RSC from key */
  208         uint64_t        iev_rsc;        /* RSC from frame */
  209 };
  210 
  211 struct ieee80211_michael_event {
  212         uint8_t         iev_src[6];     /* src MAC */
  213         uint8_t         iev_dst[6];     /* dst MAC */
  214         uint8_t         iev_cipher;     /* cipher type */
  215         uint8_t         iev_keyix;      /* key id/index */
  216 };
  217 
  218 #define RTM_IEEE80211_ASSOC     100     /* station associate (bss mode) */
  219 #define RTM_IEEE80211_REASSOC   101     /* station re-associate (bss mode) */
  220 #define RTM_IEEE80211_DISASSOC  102     /* station disassociate (bss mode) */
  221 #define RTM_IEEE80211_JOIN      103     /* station join (ap mode) */
  222 #define RTM_IEEE80211_LEAVE     104     /* station leave (ap mode) */
  223 #define RTM_IEEE80211_SCAN      105     /* scan complete, results available */
  224 #define RTM_IEEE80211_REPLAY    106     /* sequence counter replay detected */
  225 #define RTM_IEEE80211_MICHAEL   107     /* Michael MIC failure detected */
  226 #define RTM_IEEE80211_REJOIN    108     /* station re-associate (ap mode) */
  227 
  228 #endif /* _NET80211_IEEE80211_FREEBSD_H_ */

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