The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_netbsd.h

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    1 /* $NetBSD: ieee80211_netbsd.h,v 1.10.18.1 2009/06/05 16:23:34 snj Exp $ */
    2 /*-
    3  * Copyright (c) 2003-2005 Sam Leffler, Errno Consulting
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD: src/sys/net80211/ieee80211_freebsd.h,v 1.6 2005/08/08 18:46:36 sam Exp $
   29  */
   30 #ifndef _NET80211_IEEE80211_NETBSD_H_
   31 #define _NET80211_IEEE80211_NETBSD_H_
   32 
   33 #define IASSERT(__cond, __complaint)            \
   34         do {                                    \
   35                 if (!(__cond))                  \
   36                         panic __complaint ;     \
   37         } while (0)
   38 
   39 void if_printf(struct ifnet *, const char *, ...)
   40     __attribute__((__format__(__printf__,2,3)));
   41 
   42 struct ieee80211_lock {
   43         int count;
   44         int ipl;
   45 };
   46 #define IEEE80211_LOCK_INIT_IMPL(_ic, _name, _member)   \
   47         do {                                            \
   48                 (_ic)->_member.count = 0;               \
   49         } while (0)
   50 #define IEEE80211_LOCK_IMPL(_ic, _member)               \
   51         do {                                            \
   52                 int __s = splnet();                     \
   53                 if ((_ic)->_member.count++ == 0)        \
   54                         (_ic)->_member.ipl = __s;       \
   55         } while (0)
   56 #define IEEE80211_IS_LOCKED_IMPL(_ic, _member)          \
   57         ((_ic)->_member.count != 0)
   58 #define IEEE80211_UNLOCK_IMPL(_ic, _member)             \
   59         do {                                            \
   60                 if (--(_ic)->_member.count == 0)        \
   61                         splx((_ic)->_member.ipl);       \
   62         } while (0)
   63 #define IEEE80211_LOCK_ASSERT_IMPL(_ic, _member)        \
   64         IASSERT((_ic)->_member.count > 0,               \
   65             ("%s: IEEE80211_LOCK not held", __func__));
   66 
   67 /*
   68  * Beacon locking definitions.
   69  */
   70 typedef struct ieee80211_lock ieee80211_beacon_lock_t;
   71 #define IEEE80211_BEACON_LOCK_INIT(_ic, _name)          \
   72         IEEE80211_LOCK_INIT_IMPL(_ic, _name, ic_beaconlock)
   73 #define IEEE80211_BEACON_LOCK_DESTROY(_ic)
   74 #define IEEE80211_BEACON_LOCK(_ic)                      \
   75         IEEE80211_LOCK_IMPL(_ic, ic_beaconlock)
   76 #define IEEE80211_BEACON_UNLOCK(_ic)                    \
   77         IEEE80211_UNLOCK_IMPL(_ic, ic_beaconlock)
   78 #define IEEE80211_BEACON_LOCK_ASSERT(_ic)               \
   79         IEEE80211_LOCK_ASSERT_IMPL(_ic, ic_beaconlock)
   80 
   81 /*
   82  * Node locking definitions.
   83  * NB: MTX_DUPOK is because we don't generate per-interface strings.
   84  */
   85 typedef struct ieee80211_lock ieee80211_node_lock_t;
   86 #define IEEE80211_NODE_LOCK_INIT(_nt, _name)            \
   87         IEEE80211_LOCK_INIT_IMPL(_nt, _name, nt_nodelock)
   88 #define IEEE80211_NODE_LOCK_DESTROY(_nt)
   89 #define IEEE80211_NODE_LOCK(_nt)                        \
   90         IEEE80211_LOCK_IMPL(_nt, nt_nodelock)
   91 #define IEEE80211_NODE_IS_LOCKED(_nt)                   \
   92         IEEE80211_IS_LOCKED_IMPL(_nt, nt_nodelock)
   93 #define IEEE80211_NODE_UNLOCK(_nt)                      \
   94         IEEE80211_UNLOCK_IMPL(_nt, nt_nodelock)
   95 #define IEEE80211_NODE_LOCK_ASSERT(_nt)                 \
   96         IEEE80211_LOCK_ASSERT_IMPL(_nt, nt_nodelock)
   97 
   98 /*
   99  * Node table scangen locking definitions.
  100  */
  101 typedef struct ieee80211_lock ieee80211_scan_lock_t;
  102 #define IEEE80211_SCAN_LOCK_INIT(_nt, _name)            \
  103         IEEE80211_LOCK_INIT_IMPL(_nt, _name, nt_scanlock)
  104 #define IEEE80211_SCAN_LOCK_DESTROY(_nt)
  105 #define IEEE80211_SCAN_LOCK(_nt)                        \
  106         IEEE80211_LOCK_IMPL(_nt, nt_scanlock)
  107 #define IEEE80211_SCAN_UNLOCK(_nt)                      \
  108         IEEE80211_UNLOCK_IMPL(_nt, nt_scanlock)
  109 #define IEEE80211_SCAN_LOCK_ASSERT(_nt)                 \
  110         IEEE80211_LOCK_ASSERT_IMPL(_nt, nt_scanlock)
  111 
  112 /*
  113  * Per-node power-save queue definitions. 
  114  */
  115 #define IEEE80211_NODE_SAVEQ_INIT(_ni, _name) do {              \
  116         (_ni)->ni_savedq.ifq_maxlen = IEEE80211_PS_MAX_QUEUE;   \
  117 } while (0)
  118 #define IEEE80211_NODE_SAVEQ_DESTROY(_ni)
  119 #define IEEE80211_NODE_SAVEQ_QLEN(_ni)  ((_ni)->ni_savedq.ifq_len)
  120 #define IEEE80211_NODE_SAVEQ_LOCK(_ni)
  121 #define IEEE80211_NODE_SAVEQ_UNLOCK(_ni)
  122 #define IEEE80211_NODE_SAVEQ_DEQUEUE(_ni, _m, _qlen) do {       \
  123         IEEE80211_NODE_SAVEQ_LOCK(_ni);                         \
  124         IF_DEQUEUE(&(_ni)->ni_savedq, _m);                      \
  125         (_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni);               \
  126         IEEE80211_NODE_SAVEQ_UNLOCK(_ni);                       \
  127 } while (0)
  128 #define IEEE80211_NODE_SAVEQ_DRAIN(_ni, _qlen) do {             \
  129         IEEE80211_NODE_SAVEQ_LOCK(_ni);                         \
  130         (_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni);               \
  131         IF_PURGE(&(_ni)->ni_savedq);                            \
  132         IEEE80211_NODE_SAVEQ_UNLOCK(_ni);                       \
  133 } while (0)
  134 /* XXX could be optimized */
  135 #define _IEEE80211_NODE_SAVEQ_DEQUEUE_HEAD(_ni, _m) do {        \
  136         IF_DEQUEUE(&(_ni)->ni_savedq, m);                       \
  137 } while (0)
  138 #define _IEEE80211_NODE_SAVEQ_ENQUEUE(_ni, _m, _qlen, _age) do {\
  139         (_m)->m_nextpkt = NULL;                                 \
  140         if ((_ni)->ni_savedq.ifq_tail != NULL) {                \
  141                 _age -= M_AGE_GET((_ni)->ni_savedq.ifq_tail);   \
  142                 (_ni)->ni_savedq.ifq_tail->m_nextpkt = (_m);    \
  143         } else {                                                \
  144                 (_ni)->ni_savedq.ifq_head = (_m);               \
  145         }                                                       \
  146         M_AGE_SET(_m, _age);                                    \
  147         (_ni)->ni_savedq.ifq_tail = (_m);                       \
  148         (_qlen) = ++(_ni)->ni_savedq.ifq_len;                   \
  149 } while (0)
  150 
  151 /*
  152  * 802.1x MAC ACL database locking definitions.
  153  */
  154 typedef struct ieee80211_lock acl_lock_t;
  155 #define ACL_LOCK_INIT(_as, _name)       \
  156         IEEE80211_LOCK_INIT_IMPL(_as, _name, as_lock)
  157 #define ACL_LOCK_DESTROY(_as)
  158 #define ACL_LOCK(_as)                   IEEE80211_LOCK_IMPL(_as, as_lock)
  159 #define ACL_UNLOCK(_as)                 IEEE80211_UNLOCK_IMPL(_as, as_lock)
  160 #define ACL_LOCK_ASSERT(_as)            IEEE80211_LOCK_ASSERT_IMPL(_as, as_lock)
  161 
  162 /*
  163  * Node reference counting definitions.
  164  *
  165  * ieee80211_node_initref       initialize the reference count to 1
  166  * ieee80211_node_incref        add a reference
  167  * ieee80211_node_decref        remove a reference
  168  * ieee80211_node_dectestref    remove a reference and return 1 if this
  169  *                              is the last reference, otherwise 0
  170  * ieee80211_node_refcnt        reference count for printing (only)
  171  */
  172 
  173 #define ieee80211_node_initref(_ni) \
  174         do { ((_ni)->ni_refcnt = 1); } while (0)
  175 #define ieee80211_node_incref(_ni) \
  176         do { (_ni)->ni_refcnt++; } while (0)
  177 #define ieee80211_node_decref(_ni) \
  178         do { (_ni)->ni_refcnt--; } while (0)
  179 struct ieee80211_node;
  180 int ieee80211_node_dectestref(struct ieee80211_node *ni);
  181 #define ieee80211_node_refcnt(_ni)      (_ni)->ni_refcnt
  182 
  183 struct mbuf *ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen);
  184 #define M_PWR_SAV       M_PROTO1                /* bypass PS handling */
  185 #define M_MORE_DATA     M_LINK3                 /* more data frames to follow */
  186 #define M_FRAG          M_LINK4                 /* 802.11 fragment */
  187 #define M_FIRSTFRAG     M_LINK5                 /* first 802.11 fragment */
  188 #define M_FF            M_LINK6                 /* "fast frames" */
  189 /*
  190  * Encode WME access control bits in the PROTO flags.
  191  * This is safe since it's passed directly in to the
  192  * driver and there's no chance someone else will clobber
  193  * them on us.
  194  */
  195 #define M_WME_AC_MASK   (M_LINK1|M_LINK2)
  196 /* XXX 5 is wrong if M_LINK* are redefined */
  197 #define M_WME_AC_SHIFT  13
  198 
  199 #define M_WME_SETAC(m, ac) \
  200         ((m)->m_flags = ((m)->m_flags &~ M_WME_AC_MASK) | \
  201                 ((ac) << M_WME_AC_SHIFT))
  202 #define M_WME_GETAC(m)  (((m)->m_flags >> M_WME_AC_SHIFT) & 0x3)
  203 
  204 /*
  205  * Mbufs on the power save queue are tagged with an age and
  206  * timed out.  We reuse the hardware checksum field in the
  207  * mbuf packet header to store this data.
  208  */
  209 #define M_AGE_SET(m,v)          (m->m_pkthdr.csum_data = v)
  210 #define M_AGE_GET(m)            (m->m_pkthdr.csum_data)
  211 #define M_AGE_SUB(m,adj)        (m->m_pkthdr.csum_data -= adj)
  212 
  213 struct ieee80211com;
  214 
  215 /* XXX this stuff belongs elsewhere */
  216 /*
  217  * Message formats for messages from the net80211 layer to user
  218  * applications via the routing socket.  These messages are appended
  219  * to an if_announcemsghdr structure.
  220  */
  221 struct ieee80211_join_event {
  222         uint8_t         iev_addr[6];
  223 };
  224 
  225 struct ieee80211_leave_event {
  226         uint8_t         iev_addr[6];
  227 };
  228 
  229 struct ieee80211_replay_event {
  230         uint8_t         iev_src[6];     /* src MAC */
  231         uint8_t         iev_dst[6];     /* dst MAC */
  232         uint8_t         iev_cipher;     /* cipher type */
  233         uint8_t         iev_keyix;      /* key id/index */
  234         uint64_t        iev_keyrsc;     /* RSC from key */
  235         uint64_t        iev_rsc;        /* RSC from frame */
  236 };
  237 
  238 struct ieee80211_michael_event {
  239         uint8_t         iev_src[6];     /* src MAC */
  240         uint8_t         iev_dst[6];     /* dst MAC */
  241         uint8_t         iev_cipher;     /* cipher type */
  242         uint8_t         iev_keyix;      /* key id/index */
  243 };
  244 
  245 #define RTM_IEEE80211_ASSOC     100     /* station associate (bss mode) */
  246 #define RTM_IEEE80211_REASSOC   101     /* station re-associate (bss mode) */
  247 #define RTM_IEEE80211_DISASSOC  102     /* station disassociate (bss mode) */
  248 #define RTM_IEEE80211_JOIN      103     /* station join (ap mode) */
  249 #define RTM_IEEE80211_LEAVE     104     /* station leave (ap mode) */
  250 #define RTM_IEEE80211_SCAN      105     /* scan complete, results available */
  251 #define RTM_IEEE80211_REPLAY    106     /* sequence counter replay detected */
  252 #define RTM_IEEE80211_MICHAEL   107     /* Michael MIC failure detected */
  253 #define RTM_IEEE80211_REJOIN    108     /* station re-associate (ap mode) */
  254 
  255 #define __offsetof      offsetof
  256 #define ticks   hardclock_ticks
  257 #define ovbcopy(__src, __dst, __n)      ((void)memmove(__dst, __src, __n))
  258 
  259 void    if_printf(struct ifnet *, const char *, ...);
  260 void    m_align(struct mbuf *, int);
  261 int     m_append(struct mbuf *, int, const caddr_t);
  262 void    get_random_bytes(void *, size_t);
  263 
  264 void    ieee80211_sysctl_attach(struct ieee80211com *);
  265 void    ieee80211_sysctl_detach(struct ieee80211com *);
  266 void    ieee80211_load_module(const char *);
  267 
  268 void    ieee80211_init(void);
  269 #define IEEE80211_CRYPTO_SETUP(name)                            \
  270         static void name(void);                                 \
  271         __link_set_add_text(ieee80211_funcs, name);             \
  272         static void name(void)
  273 
  274 #endif /* !_NET80211_IEEE80211_NETBSD_H_ */

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