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) 2003-2008 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: releng/11.0/sys/net80211/ieee80211_freebsd.h 302283 2016-06-29 17:25:46Z avos $
   26  */
   27 #ifndef _NET80211_IEEE80211_FREEBSD_H_
   28 #define _NET80211_IEEE80211_FREEBSD_H_
   29 
   30 #ifdef _KERNEL
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/counter.h>
   34 #include <sys/lock.h>
   35 #include <sys/mutex.h>
   36 #include <sys/rwlock.h>
   37 #include <sys/sysctl.h>
   38 #include <sys/taskqueue.h>
   39 
   40 /*
   41  * Common state locking definitions.
   42  */
   43 typedef struct {
   44         char            name[16];               /* e.g. "ath0_com_lock" */
   45         struct mtx      mtx;
   46 } ieee80211_com_lock_t;
   47 #define IEEE80211_LOCK_INIT(_ic, _name) do {                            \
   48         ieee80211_com_lock_t *cl = &(_ic)->ic_comlock;                  \
   49         snprintf(cl->name, sizeof(cl->name), "%s_com_lock", _name);     \
   50         mtx_init(&cl->mtx, cl->name, NULL, MTX_DEF | MTX_RECURSE);      \
   51 } while (0)
   52 #define IEEE80211_LOCK_OBJ(_ic) (&(_ic)->ic_comlock.mtx)
   53 #define IEEE80211_LOCK_DESTROY(_ic) mtx_destroy(IEEE80211_LOCK_OBJ(_ic))
   54 #define IEEE80211_LOCK(_ic)        mtx_lock(IEEE80211_LOCK_OBJ(_ic))
   55 #define IEEE80211_UNLOCK(_ic)      mtx_unlock(IEEE80211_LOCK_OBJ(_ic))
   56 #define IEEE80211_LOCK_ASSERT(_ic) \
   57         mtx_assert(IEEE80211_LOCK_OBJ(_ic), MA_OWNED)
   58 #define IEEE80211_UNLOCK_ASSERT(_ic) \
   59         mtx_assert(IEEE80211_LOCK_OBJ(_ic), MA_NOTOWNED)
   60 
   61 /*
   62  * Transmit lock.
   63  *
   64  * This is a (mostly) temporary lock designed to serialise all of the
   65  * transmission operations throughout the stack.
   66  */
   67 typedef struct {
   68         char            name[16];               /* e.g. "ath0_tx_lock" */
   69         struct mtx      mtx;
   70 } ieee80211_tx_lock_t;
   71 #define IEEE80211_TX_LOCK_INIT(_ic, _name) do {                         \
   72         ieee80211_tx_lock_t *cl = &(_ic)->ic_txlock;                    \
   73         snprintf(cl->name, sizeof(cl->name), "%s_tx_lock", _name);      \
   74         mtx_init(&cl->mtx, cl->name, NULL, MTX_DEF);    \
   75 } while (0)
   76 #define IEEE80211_TX_LOCK_OBJ(_ic)      (&(_ic)->ic_txlock.mtx)
   77 #define IEEE80211_TX_LOCK_DESTROY(_ic) mtx_destroy(IEEE80211_TX_LOCK_OBJ(_ic))
   78 #define IEEE80211_TX_LOCK(_ic)     mtx_lock(IEEE80211_TX_LOCK_OBJ(_ic))
   79 #define IEEE80211_TX_UNLOCK(_ic)           mtx_unlock(IEEE80211_TX_LOCK_OBJ(_ic))
   80 #define IEEE80211_TX_LOCK_ASSERT(_ic) \
   81         mtx_assert(IEEE80211_TX_LOCK_OBJ(_ic), MA_OWNED)
   82 #define IEEE80211_TX_UNLOCK_ASSERT(_ic) \
   83         mtx_assert(IEEE80211_TX_LOCK_OBJ(_ic), MA_NOTOWNED)
   84 
   85 /*
   86  * Stageq / ni_tx_superg lock
   87  */
   88 typedef struct {
   89         char            name[16];               /* e.g. "ath0_ff_lock" */
   90         struct mtx      mtx;
   91 } ieee80211_ff_lock_t;
   92 #define IEEE80211_FF_LOCK_INIT(_ic, _name) do {                         \
   93         ieee80211_ff_lock_t *fl = &(_ic)->ic_fflock;                    \
   94         snprintf(fl->name, sizeof(fl->name), "%s_ff_lock", _name);      \
   95         mtx_init(&fl->mtx, fl->name, NULL, MTX_DEF);                    \
   96 } while (0)
   97 #define IEEE80211_FF_LOCK_OBJ(_ic)      (&(_ic)->ic_fflock.mtx)
   98 #define IEEE80211_FF_LOCK_DESTROY(_ic)  mtx_destroy(IEEE80211_FF_LOCK_OBJ(_ic))
   99 #define IEEE80211_FF_LOCK(_ic)          mtx_lock(IEEE80211_FF_LOCK_OBJ(_ic))
  100 #define IEEE80211_FF_UNLOCK(_ic)        mtx_unlock(IEEE80211_FF_LOCK_OBJ(_ic))
  101 #define IEEE80211_FF_LOCK_ASSERT(_ic) \
  102         mtx_assert(IEEE80211_FF_LOCK_OBJ(_ic), MA_OWNED)
  103 
  104 /*
  105  * Node locking definitions.
  106  */
  107 typedef struct {
  108         char            name[16];               /* e.g. "ath0_node_lock" */
  109         struct mtx      mtx;
  110 } ieee80211_node_lock_t;
  111 #define IEEE80211_NODE_LOCK_INIT(_nt, _name) do {                       \
  112         ieee80211_node_lock_t *nl = &(_nt)->nt_nodelock;                \
  113         snprintf(nl->name, sizeof(nl->name), "%s_node_lock", _name);    \
  114         mtx_init(&nl->mtx, nl->name, NULL, MTX_DEF | MTX_RECURSE);      \
  115 } while (0)
  116 #define IEEE80211_NODE_LOCK_OBJ(_nt)    (&(_nt)->nt_nodelock.mtx)
  117 #define IEEE80211_NODE_LOCK_DESTROY(_nt) \
  118         mtx_destroy(IEEE80211_NODE_LOCK_OBJ(_nt))
  119 #define IEEE80211_NODE_LOCK(_nt) \
  120         mtx_lock(IEEE80211_NODE_LOCK_OBJ(_nt))
  121 #define IEEE80211_NODE_IS_LOCKED(_nt) \
  122         mtx_owned(IEEE80211_NODE_LOCK_OBJ(_nt))
  123 #define IEEE80211_NODE_UNLOCK(_nt) \
  124         mtx_unlock(IEEE80211_NODE_LOCK_OBJ(_nt))
  125 #define IEEE80211_NODE_LOCK_ASSERT(_nt) \
  126         mtx_assert(IEEE80211_NODE_LOCK_OBJ(_nt), MA_OWNED)
  127 
  128 /*
  129  * Power-save queue definitions. 
  130  */
  131 typedef struct mtx ieee80211_psq_lock_t;
  132 #define IEEE80211_PSQ_INIT(_psq, _name) \
  133         mtx_init(&(_psq)->psq_lock, _name, "802.11 ps q", MTX_DEF)
  134 #define IEEE80211_PSQ_DESTROY(_psq)     mtx_destroy(&(_psq)->psq_lock)
  135 #define IEEE80211_PSQ_LOCK(_psq)        mtx_lock(&(_psq)->psq_lock)
  136 #define IEEE80211_PSQ_UNLOCK(_psq)      mtx_unlock(&(_psq)->psq_lock)
  137 
  138 #ifndef IF_PREPEND_LIST
  139 #define _IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do {        \
  140         (mtail)->m_nextpkt = (ifq)->ifq_head;                   \
  141         if ((ifq)->ifq_tail == NULL)                            \
  142                 (ifq)->ifq_tail = (mtail);                      \
  143         (ifq)->ifq_head = (mhead);                              \
  144         (ifq)->ifq_len += (mcount);                             \
  145 } while (0)
  146 #define IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do {         \
  147         IF_LOCK(ifq);                                           \
  148         _IF_PREPEND_LIST(ifq, mhead, mtail, mcount);            \
  149         IF_UNLOCK(ifq);                                         \
  150 } while (0)
  151 #endif /* IF_PREPEND_LIST */
  152  
  153 /*
  154  * Age queue definitions.
  155  */
  156 typedef struct mtx ieee80211_ageq_lock_t;
  157 #define IEEE80211_AGEQ_INIT(_aq, _name) \
  158         mtx_init(&(_aq)->aq_lock, _name, "802.11 age q", MTX_DEF)
  159 #define IEEE80211_AGEQ_DESTROY(_aq)     mtx_destroy(&(_aq)->aq_lock)
  160 #define IEEE80211_AGEQ_LOCK(_aq)        mtx_lock(&(_aq)->aq_lock)
  161 #define IEEE80211_AGEQ_UNLOCK(_aq)      mtx_unlock(&(_aq)->aq_lock)
  162 
  163 /*
  164  * 802.1x MAC ACL database locking definitions.
  165  */
  166 typedef struct mtx acl_lock_t;
  167 #define ACL_LOCK_INIT(_as, _name) \
  168         mtx_init(&(_as)->as_lock, _name, "802.11 ACL", MTX_DEF)
  169 #define ACL_LOCK_DESTROY(_as)           mtx_destroy(&(_as)->as_lock)
  170 #define ACL_LOCK(_as)                   mtx_lock(&(_as)->as_lock)
  171 #define ACL_UNLOCK(_as)                 mtx_unlock(&(_as)->as_lock)
  172 #define ACL_LOCK_ASSERT(_as) \
  173         mtx_assert((&(_as)->as_lock), MA_OWNED)
  174 
  175 /*
  176  * Scan table definitions.
  177  */
  178 typedef struct mtx ieee80211_scan_table_lock_t;
  179 #define IEEE80211_SCAN_TABLE_LOCK_INIT(_st, _name) \
  180         mtx_init(&(_st)->st_lock, _name, "802.11 scan table", MTX_DEF)
  181 #define IEEE80211_SCAN_TABLE_LOCK_DESTROY(_st)  mtx_destroy(&(_st)->st_lock)
  182 #define IEEE80211_SCAN_TABLE_LOCK(_st)          mtx_lock(&(_st)->st_lock)
  183 #define IEEE80211_SCAN_TABLE_UNLOCK(_st)        mtx_unlock(&(_st)->st_lock)
  184 
  185 typedef struct mtx ieee80211_scan_iter_lock_t;
  186 #define IEEE80211_SCAN_ITER_LOCK_INIT(_st, _name) \
  187         mtx_init(&(_st)->st_scanlock, _name, "802.11 scangen", MTX_DEF)
  188 #define IEEE80211_SCAN_ITER_LOCK_DESTROY(_st)   mtx_destroy(&(_st)->st_scanlock)
  189 #define IEEE80211_SCAN_ITER_LOCK(_st)           mtx_lock(&(_st)->st_scanlock)
  190 #define IEEE80211_SCAN_ITER_UNLOCK(_st) mtx_unlock(&(_st)->st_scanlock)
  191 
  192 /*
  193  * Mesh node/routing definitions.
  194  */
  195 typedef struct mtx ieee80211_rte_lock_t;
  196 #define MESH_RT_ENTRY_LOCK_INIT(_rt, _name) \
  197         mtx_init(&(rt)->rt_lock, _name, "802.11s route entry", MTX_DEF)
  198 #define MESH_RT_ENTRY_LOCK_DESTROY(_rt) \
  199         mtx_destroy(&(_rt)->rt_lock)
  200 #define MESH_RT_ENTRY_LOCK(rt)  mtx_lock(&(rt)->rt_lock)
  201 #define MESH_RT_ENTRY_LOCK_ASSERT(rt) mtx_assert(&(rt)->rt_lock, MA_OWNED)
  202 #define MESH_RT_ENTRY_UNLOCK(rt)        mtx_unlock(&(rt)->rt_lock)
  203 
  204 typedef struct mtx ieee80211_rt_lock_t;
  205 #define MESH_RT_LOCK(ms)        mtx_lock(&(ms)->ms_rt_lock)
  206 #define MESH_RT_LOCK_ASSERT(ms) mtx_assert(&(ms)->ms_rt_lock, MA_OWNED)
  207 #define MESH_RT_UNLOCK(ms)      mtx_unlock(&(ms)->ms_rt_lock)
  208 #define MESH_RT_LOCK_INIT(ms, name) \
  209         mtx_init(&(ms)->ms_rt_lock, name, "802.11s routing table", MTX_DEF)
  210 #define MESH_RT_LOCK_DESTROY(ms) \
  211         mtx_destroy(&(ms)->ms_rt_lock)
  212 
  213 /*
  214  * Node reference counting definitions.
  215  *
  216  * ieee80211_node_initref       initialize the reference count to 1
  217  * ieee80211_node_incref        add a reference
  218  * ieee80211_node_decref        remove a reference
  219  * ieee80211_node_dectestref    remove a reference and return 1 if this
  220  *                              is the last reference, otherwise 0
  221  * ieee80211_node_refcnt        reference count for printing (only)
  222  */
  223 #include <machine/atomic.h>
  224 
  225 #define ieee80211_node_initref(_ni) \
  226         do { ((_ni)->ni_refcnt = 1); } while (0)
  227 #define ieee80211_node_incref(_ni) \
  228         atomic_add_int(&(_ni)->ni_refcnt, 1)
  229 #define ieee80211_node_decref(_ni) \
  230         atomic_subtract_int(&(_ni)->ni_refcnt, 1)
  231 struct ieee80211_node;
  232 int     ieee80211_node_dectestref(struct ieee80211_node *ni);
  233 #define ieee80211_node_refcnt(_ni)      (_ni)->ni_refcnt
  234 
  235 struct ifqueue;
  236 struct ieee80211vap;
  237 void    ieee80211_drain_ifq(struct ifqueue *);
  238 void    ieee80211_flush_ifq(struct ifqueue *, struct ieee80211vap *);
  239 
  240 void    ieee80211_vap_destroy(struct ieee80211vap *);
  241 
  242 #define IFNET_IS_UP_RUNNING(_ifp) \
  243         (((_ifp)->if_flags & IFF_UP) && \
  244          ((_ifp)->if_drv_flags & IFF_DRV_RUNNING))
  245 
  246 /* XXX TODO: cap these at 1, as hz may not be 1000 */
  247 #define msecs_to_ticks(ms)      (((ms)*hz)/1000)
  248 #define ticks_to_msecs(t)       (1000*(t) / hz)
  249 #define ticks_to_secs(t)        ((t) / hz)
  250 
  251 #define ieee80211_time_after(a,b)       ((long)(b) - (long)(a) < 0)
  252 #define ieee80211_time_before(a,b)      ieee80211_time_after(b,a)
  253 #define ieee80211_time_after_eq(a,b)    ((long)(a) - (long)(b) >= 0)
  254 #define ieee80211_time_before_eq(a,b)   ieee80211_time_after_eq(b,a)
  255 
  256 struct mbuf *ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen);
  257 
  258 /* tx path usage */
  259 #define M_ENCAP         M_PROTO1                /* 802.11 encap done */
  260 #define M_EAPOL         M_PROTO3                /* PAE/EAPOL frame */
  261 #define M_PWR_SAV       M_PROTO4                /* bypass PS handling */
  262 #define M_MORE_DATA     M_PROTO5                /* more data frames to follow */
  263 #define M_FF            M_PROTO6                /* fast frame / A-MSDU */
  264 #define M_TXCB          M_PROTO7                /* do tx complete callback */
  265 #define M_AMPDU_MPDU    M_PROTO8                /* ok for A-MPDU aggregation */
  266 #define M_FRAG          M_PROTO9                /* frame fragmentation */
  267 #define M_FIRSTFRAG     M_PROTO10               /* first frame fragment */
  268 #define M_LASTFRAG      M_PROTO11               /* last frame fragment */
  269 
  270 #define M_80211_TX \
  271         (M_ENCAP|M_EAPOL|M_PWR_SAV|M_MORE_DATA|M_FF|M_TXCB| \
  272          M_AMPDU_MPDU|M_FRAG|M_FIRSTFRAG|M_LASTFRAG)
  273 
  274 /* rx path usage */
  275 #define M_AMPDU         M_PROTO1                /* A-MPDU subframe */
  276 #define M_WEP           M_PROTO2                /* WEP done by hardware */
  277 #if 0
  278 #define M_AMPDU_MPDU    M_PROTO8                /* A-MPDU re-order done */
  279 #endif
  280 #define M_80211_RX      (M_AMPDU|M_WEP|M_AMPDU_MPDU)
  281 
  282 #define IEEE80211_MBUF_TX_FLAG_BITS \
  283         M_FLAG_BITS \
  284         "\15M_ENCAP\17M_EAPOL\20M_PWR_SAV\21M_MORE_DATA\22M_FF\23M_TXCB" \
  285         "\24M_AMPDU_MPDU\25M_FRAG\26M_FIRSTFRAG\27M_LASTFRAG"
  286 
  287 #define IEEE80211_MBUF_RX_FLAG_BITS \
  288         M_FLAG_BITS \
  289         "\15M_AMPDU\16M_WEP\24M_AMPDU_MPDU"
  290 
  291 /*
  292  * Store WME access control bits in the vlan tag.
  293  * This is safe since it's done after the packet is classified
  294  * (where we use any previous tag) and because it's passed
  295  * directly in to the driver and there's no chance someone
  296  * else will clobber them on us.
  297  */
  298 #define M_WME_SETAC(m, ac) \
  299         ((m)->m_pkthdr.ether_vtag = (ac))
  300 #define M_WME_GETAC(m)  ((m)->m_pkthdr.ether_vtag)
  301 
  302 /*
  303  * Mbufs on the power save queue are tagged with an age and
  304  * timed out.  We reuse the hardware checksum field in the
  305  * mbuf packet header to store this data.
  306  */
  307 #define M_AGE_SET(m,v)          (m->m_pkthdr.csum_data = v)
  308 #define M_AGE_GET(m)            (m->m_pkthdr.csum_data)
  309 #define M_AGE_SUB(m,adj)        (m->m_pkthdr.csum_data -= adj)
  310 
  311 /*
  312  * Store the sequence number.
  313  */
  314 #define M_SEQNO_SET(m, seqno) \
  315         ((m)->m_pkthdr.tso_segsz = (seqno))
  316 #define M_SEQNO_GET(m)  ((m)->m_pkthdr.tso_segsz)
  317 
  318 #define MTAG_ABI_NET80211       1132948340      /* net80211 ABI */
  319 
  320 struct ieee80211_cb {
  321         void    (*func)(struct ieee80211_node *, void *, int status);
  322         void    *arg;
  323 };
  324 #define NET80211_TAG_CALLBACK   0       /* xmit complete callback */
  325 int     ieee80211_add_callback(struct mbuf *m,
  326                 void (*func)(struct ieee80211_node *, void *, int), void *arg);
  327 void    ieee80211_process_callback(struct ieee80211_node *, struct mbuf *, int);
  328 
  329 #define NET80211_TAG_XMIT_PARAMS        1
  330 /* See below; this is after the bpf_params definition */
  331 
  332 #define NET80211_TAG_RECV_PARAMS        2
  333 
  334 struct ieee80211com;
  335 int     ieee80211_parent_xmitpkt(struct ieee80211com *, struct mbuf *);
  336 int     ieee80211_vap_xmitpkt(struct ieee80211vap *, struct mbuf *);
  337 
  338 void    get_random_bytes(void *, size_t);
  339 
  340 void    ieee80211_sysctl_attach(struct ieee80211com *);
  341 void    ieee80211_sysctl_detach(struct ieee80211com *);
  342 void    ieee80211_sysctl_vattach(struct ieee80211vap *);
  343 void    ieee80211_sysctl_vdetach(struct ieee80211vap *);
  344 
  345 SYSCTL_DECL(_net_wlan);
  346 int     ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS);
  347 
  348 void    ieee80211_load_module(const char *);
  349 
  350 /*
  351  * A "policy module" is an adjunct module to net80211 that provides
  352  * functionality that typically includes policy decisions.  This
  353  * modularity enables extensibility and vendor-supplied functionality.
  354  */
  355 #define _IEEE80211_POLICY_MODULE(policy, name, version)                 \
  356 typedef void (*policy##_setup)(int);                                    \
  357 SET_DECLARE(policy##_set, policy##_setup);                              \
  358 static int                                                              \
  359 wlan_##name##_modevent(module_t mod, int type, void *unused)            \
  360 {                                                                       \
  361         policy##_setup * const *iter, f;                                \
  362         switch (type) {                                                 \
  363         case MOD_LOAD:                                                  \
  364                 SET_FOREACH(iter, policy##_set) {                       \
  365                         f = (void*) *iter;                              \
  366                         f(type);                                        \
  367                 }                                                       \
  368                 return 0;                                               \
  369         case MOD_UNLOAD:                                                \
  370         case MOD_QUIESCE:                                               \
  371                 if (nrefs) {                                            \
  372                         printf("wlan_" #name ": still in use "          \
  373                                 "(%u dynamic refs)\n", nrefs);          \
  374                         return EBUSY;                                   \
  375                 }                                                       \
  376                 if (type == MOD_UNLOAD) {                               \
  377                         SET_FOREACH(iter, policy##_set) {               \
  378                                 f = (void*) *iter;                      \
  379                                 f(type);                                \
  380                         }                                               \
  381                 }                                                       \
  382                 return 0;                                               \
  383         }                                                               \
  384         return EINVAL;                                                  \
  385 }                                                                       \
  386 static moduledata_t name##_mod = {                                      \
  387         "wlan_" #name,                                                  \
  388         wlan_##name##_modevent,                                         \
  389         0                                                               \
  390 };                                                                      \
  391 DECLARE_MODULE(wlan_##name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);\
  392 MODULE_VERSION(wlan_##name, version);                                   \
  393 MODULE_DEPEND(wlan_##name, wlan, 1, 1, 1)
  394 
  395 /*
  396  * Crypto modules implement cipher support.
  397  */
  398 #define IEEE80211_CRYPTO_MODULE(name, version)                          \
  399 _IEEE80211_POLICY_MODULE(crypto, name, version);                        \
  400 static void                                                             \
  401 name##_modevent(int type)                                               \
  402 {                                                                       \
  403         if (type == MOD_LOAD)                                           \
  404                 ieee80211_crypto_register(&name);                       \
  405         else                                                            \
  406                 ieee80211_crypto_unregister(&name);                     \
  407 }                                                                       \
  408 TEXT_SET(crypto##_set, name##_modevent)
  409 
  410 /*
  411  * Scanner modules provide scanning policy.
  412  */
  413 #define IEEE80211_SCANNER_MODULE(name, version)                         \
  414         _IEEE80211_POLICY_MODULE(scanner, name, version)
  415 
  416 #define IEEE80211_SCANNER_ALG(name, alg, v)                             \
  417 static void                                                             \
  418 name##_modevent(int type)                                               \
  419 {                                                                       \
  420         if (type == MOD_LOAD)                                           \
  421                 ieee80211_scanner_register(alg, &v);                    \
  422         else                                                            \
  423                 ieee80211_scanner_unregister(alg, &v);                  \
  424 }                                                                       \
  425 TEXT_SET(scanner_set, name##_modevent);                                 \
  426 
  427 /*
  428  * ACL modules implement acl policy.
  429  */
  430 #define IEEE80211_ACL_MODULE(name, alg, version)                        \
  431 _IEEE80211_POLICY_MODULE(acl, name, version);                           \
  432 static void                                                             \
  433 alg##_modevent(int type)                                                \
  434 {                                                                       \
  435         if (type == MOD_LOAD)                                           \
  436                 ieee80211_aclator_register(&alg);                       \
  437         else                                                            \
  438                 ieee80211_aclator_unregister(&alg);                     \
  439 }                                                                       \
  440 TEXT_SET(acl_set, alg##_modevent);                                      \
  441 
  442 /*
  443  * Authenticator modules handle 802.1x/WPA authentication.
  444  */
  445 #define IEEE80211_AUTH_MODULE(name, version)                            \
  446         _IEEE80211_POLICY_MODULE(auth, name, version)
  447 
  448 #define IEEE80211_AUTH_ALG(name, alg, v)                                \
  449 static void                                                             \
  450 name##_modevent(int type)                                               \
  451 {                                                                       \
  452         if (type == MOD_LOAD)                                           \
  453                 ieee80211_authenticator_register(alg, &v);              \
  454         else                                                            \
  455                 ieee80211_authenticator_unregister(alg);                \
  456 }                                                                       \
  457 TEXT_SET(auth_set, name##_modevent)
  458 
  459 /*
  460  * Rate control modules provide tx rate control support.
  461  */
  462 #define IEEE80211_RATECTL_MODULE(alg, version)                          \
  463         _IEEE80211_POLICY_MODULE(ratectl, alg, version);                \
  464 
  465 #define IEEE80211_RATECTL_ALG(name, alg, v)                             \
  466 static void                                                             \
  467 alg##_modevent(int type)                                                \
  468 {                                                                       \
  469         if (type == MOD_LOAD)                                           \
  470                 ieee80211_ratectl_register(alg, &v);                    \
  471         else                                                            \
  472                 ieee80211_ratectl_unregister(alg);                      \
  473 }                                                                       \
  474 TEXT_SET(ratectl##_set, alg##_modevent)
  475 
  476 struct ieee80211req;
  477 typedef int ieee80211_ioctl_getfunc(struct ieee80211vap *,
  478     struct ieee80211req *);
  479 SET_DECLARE(ieee80211_ioctl_getset, ieee80211_ioctl_getfunc);
  480 #define IEEE80211_IOCTL_GET(_name, _get) TEXT_SET(ieee80211_ioctl_getset, _get)
  481 
  482 typedef int ieee80211_ioctl_setfunc(struct ieee80211vap *,
  483     struct ieee80211req *);
  484 SET_DECLARE(ieee80211_ioctl_setset, ieee80211_ioctl_setfunc);
  485 #define IEEE80211_IOCTL_SET(_name, _set) TEXT_SET(ieee80211_ioctl_setset, _set)
  486 #endif /* _KERNEL */
  487 
  488 /* XXX this stuff belongs elsewhere */
  489 /*
  490  * Message formats for messages from the net80211 layer to user
  491  * applications via the routing socket.  These messages are appended
  492  * to an if_announcemsghdr structure.
  493  */
  494 struct ieee80211_join_event {
  495         uint8_t         iev_addr[6];
  496 };
  497 
  498 struct ieee80211_leave_event {
  499         uint8_t         iev_addr[6];
  500 };
  501 
  502 struct ieee80211_replay_event {
  503         uint8_t         iev_src[6];     /* src MAC */
  504         uint8_t         iev_dst[6];     /* dst MAC */
  505         uint8_t         iev_cipher;     /* cipher type */
  506         uint8_t         iev_keyix;      /* key id/index */
  507         uint64_t        iev_keyrsc;     /* RSC from key */
  508         uint64_t        iev_rsc;        /* RSC from frame */
  509 };
  510 
  511 struct ieee80211_michael_event {
  512         uint8_t         iev_src[6];     /* src MAC */
  513         uint8_t         iev_dst[6];     /* dst MAC */
  514         uint8_t         iev_cipher;     /* cipher type */
  515         uint8_t         iev_keyix;      /* key id/index */
  516 };
  517 
  518 struct ieee80211_wds_event {
  519         uint8_t         iev_addr[6];
  520 };
  521 
  522 struct ieee80211_csa_event {
  523         uint32_t        iev_flags;      /* channel flags */
  524         uint16_t        iev_freq;       /* setting in Mhz */
  525         uint8_t         iev_ieee;       /* IEEE channel number */
  526         uint8_t         iev_mode;       /* CSA mode */
  527         uint8_t         iev_count;      /* CSA count */
  528 };
  529 
  530 struct ieee80211_cac_event {
  531         uint32_t        iev_flags;      /* channel flags */
  532         uint16_t        iev_freq;       /* setting in Mhz */
  533         uint8_t         iev_ieee;       /* IEEE channel number */
  534         /* XXX timestamp? */
  535         uint8_t         iev_type;       /* IEEE80211_NOTIFY_CAC_* */
  536 };
  537 
  538 struct ieee80211_radar_event {
  539         uint32_t        iev_flags;      /* channel flags */
  540         uint16_t        iev_freq;       /* setting in Mhz */
  541         uint8_t         iev_ieee;       /* IEEE channel number */
  542         /* XXX timestamp? */
  543 };
  544 
  545 struct ieee80211_auth_event {
  546         uint8_t         iev_addr[6];
  547 };
  548 
  549 struct ieee80211_deauth_event {
  550         uint8_t         iev_addr[6];
  551 };
  552 
  553 struct ieee80211_country_event {
  554         uint8_t         iev_addr[6];
  555         uint8_t         iev_cc[2];      /* ISO country code */
  556 };
  557 
  558 struct ieee80211_radio_event {
  559         uint8_t         iev_state;      /* 1 on, 0 off */
  560 };
  561 
  562 #define RTM_IEEE80211_ASSOC     100     /* station associate (bss mode) */
  563 #define RTM_IEEE80211_REASSOC   101     /* station re-associate (bss mode) */
  564 #define RTM_IEEE80211_DISASSOC  102     /* station disassociate (bss mode) */
  565 #define RTM_IEEE80211_JOIN      103     /* station join (ap mode) */
  566 #define RTM_IEEE80211_LEAVE     104     /* station leave (ap mode) */
  567 #define RTM_IEEE80211_SCAN      105     /* scan complete, results available */
  568 #define RTM_IEEE80211_REPLAY    106     /* sequence counter replay detected */
  569 #define RTM_IEEE80211_MICHAEL   107     /* Michael MIC failure detected */
  570 #define RTM_IEEE80211_REJOIN    108     /* station re-associate (ap mode) */
  571 #define RTM_IEEE80211_WDS       109     /* WDS discovery (ap mode) */
  572 #define RTM_IEEE80211_CSA       110     /* Channel Switch Announcement event */
  573 #define RTM_IEEE80211_RADAR     111     /* radar event */
  574 #define RTM_IEEE80211_CAC       112     /* Channel Availability Check event */
  575 #define RTM_IEEE80211_DEAUTH    113     /* station deauthenticate */
  576 #define RTM_IEEE80211_AUTH      114     /* station authenticate (ap mode) */
  577 #define RTM_IEEE80211_COUNTRY   115     /* discovered country code (sta mode) */
  578 #define RTM_IEEE80211_RADIO     116     /* RF kill switch state change */
  579 
  580 /*
  581  * Structure prepended to raw packets sent through the bpf
  582  * interface when set to DLT_IEEE802_11_RADIO.  This allows
  583  * user applications to specify pretty much everything in
  584  * an Atheros tx descriptor.  XXX need to generalize.
  585  *
  586  * XXX cannot be more than 14 bytes as it is copied to a sockaddr's
  587  * XXX sa_data area.
  588  */
  589 struct ieee80211_bpf_params {
  590         uint8_t         ibp_vers;       /* version */
  591 #define IEEE80211_BPF_VERSION   0
  592         uint8_t         ibp_len;        /* header length in bytes */
  593         uint8_t         ibp_flags;
  594 #define IEEE80211_BPF_SHORTPRE  0x01    /* tx with short preamble */
  595 #define IEEE80211_BPF_NOACK     0x02    /* tx with no ack */
  596 #define IEEE80211_BPF_CRYPTO    0x04    /* tx with h/w encryption */
  597 #define IEEE80211_BPF_FCS       0x10    /* frame incldues FCS */
  598 #define IEEE80211_BPF_DATAPAD   0x20    /* frame includes data padding */
  599 #define IEEE80211_BPF_RTS       0x40    /* tx with RTS/CTS */
  600 #define IEEE80211_BPF_CTS       0x80    /* tx with CTS only */
  601         uint8_t         ibp_pri;        /* WME/WMM AC+tx antenna */
  602         uint8_t         ibp_try0;       /* series 1 try count */
  603         uint8_t         ibp_rate0;      /* series 1 IEEE tx rate */
  604         uint8_t         ibp_power;      /* tx power (device units) */
  605         uint8_t         ibp_ctsrate;    /* IEEE tx rate for CTS */
  606         uint8_t         ibp_try1;       /* series 2 try count */
  607         uint8_t         ibp_rate1;      /* series 2 IEEE tx rate */
  608         uint8_t         ibp_try2;       /* series 3 try count */
  609         uint8_t         ibp_rate2;      /* series 3 IEEE tx rate */
  610         uint8_t         ibp_try3;       /* series 4 try count */
  611         uint8_t         ibp_rate3;      /* series 4 IEEE tx rate */
  612 };
  613 
  614 #ifdef _KERNEL
  615 struct ieee80211_tx_params {
  616         struct ieee80211_bpf_params params;
  617 };
  618 int     ieee80211_add_xmit_params(struct mbuf *m,
  619             const struct ieee80211_bpf_params *);
  620 int     ieee80211_get_xmit_params(struct mbuf *m,
  621             struct ieee80211_bpf_params *);
  622 
  623 #define IEEE80211_MAX_CHAINS            3
  624 #define IEEE80211_MAX_EVM_PILOTS        6
  625 
  626 #define IEEE80211_R_NF          0x0000001       /* global NF value valid */
  627 #define IEEE80211_R_RSSI        0x0000002       /* global RSSI value valid */
  628 #define IEEE80211_R_C_CHAIN     0x0000004       /* RX chain count valid */
  629 #define IEEE80211_R_C_NF        0x0000008       /* per-chain NF value valid */
  630 #define IEEE80211_R_C_RSSI      0x0000010       /* per-chain RSSI value valid */
  631 #define IEEE80211_R_C_EVM       0x0000020       /* per-chain EVM valid */
  632 #define IEEE80211_R_C_HT40      0x0000040       /* RX'ed packet is 40mhz, pilots 4,5 valid */
  633 #define IEEE80211_R_FREQ        0x0000080       /* Freq value populated, MHz */
  634 #define IEEE80211_R_IEEE        0x0000100       /* IEEE value populated */
  635 #define IEEE80211_R_BAND        0x0000200       /* Frequency band populated */
  636 
  637 struct ieee80211_rx_stats {
  638         uint32_t r_flags;               /* IEEE80211_R_* flags */
  639         uint8_t c_chain;                /* number of RX chains involved */
  640         int16_t c_nf_ctl[IEEE80211_MAX_CHAINS]; /* per-chain NF */
  641         int16_t c_nf_ext[IEEE80211_MAX_CHAINS]; /* per-chain NF */
  642         int16_t c_rssi_ctl[IEEE80211_MAX_CHAINS];       /* per-chain RSSI */
  643         int16_t c_rssi_ext[IEEE80211_MAX_CHAINS];       /* per-chain RSSI */
  644         uint8_t nf;                     /* global NF */
  645         uint8_t rssi;                   /* global RSSI */
  646         uint8_t evm[IEEE80211_MAX_CHAINS][IEEE80211_MAX_EVM_PILOTS];
  647                                         /* per-chain, per-pilot EVM values */
  648         uint16_t c_freq;
  649         uint8_t c_ieee;
  650 };
  651 
  652 struct ieee80211_rx_params {
  653         struct ieee80211_rx_stats params;
  654 };
  655 int     ieee80211_add_rx_params(struct mbuf *m,
  656             const struct ieee80211_rx_stats *rxs);
  657 int     ieee80211_get_rx_params(struct mbuf *m,
  658             struct ieee80211_rx_stats *rxs);
  659 #endif /* _KERNEL */
  660 
  661 /*
  662  * Malloc API.  Other BSD operating systems have slightly
  663  * different malloc/free namings (eg DragonflyBSD.)
  664  */
  665 #define IEEE80211_MALLOC        malloc
  666 #define IEEE80211_FREE          free
  667 
  668 /* XXX TODO: get rid of WAITOK, fix all the users of it? */
  669 #define IEEE80211_M_NOWAIT      M_NOWAIT
  670 #define IEEE80211_M_WAITOK      M_WAITOK
  671 #define IEEE80211_M_ZERO        M_ZERO
  672 
  673 /* XXX TODO: the type fields */
  674 
  675 #endif /* _NET80211_IEEE80211_FREEBSD_H_ */

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