FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_freebsd.h

     /*-
      * Copyright (c) 2003-2005 Sam Leffler, Errno Consulting
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/6.4/sys/net80211/ieee80211_freebsd.h 167758 2007-03-21 05:01:44Z sam $
     */
    #ifndef _NET80211_IEEE80211_FREEBSD_H_
    #define _NET80211_IEEE80211_FREEBSD_H_
    
    #ifdef _KERNEL
    /*
     * Beacon locking definitions.
     */
    typedef struct mtx ieee80211_beacon_lock_t;
    #define IEEE80211_BEACON_LOCK_INIT(_ic, _name) \
            mtx_init(&(_ic)->ic_beaconlock, _name, "802.11 beacon lock", MTX_DEF)
    #define IEEE80211_BEACON_LOCK_DESTROY(_ic) mtx_destroy(&(_ic)->ic_beaconlock)
    #define IEEE80211_BEACON_LOCK(_ic)         mtx_lock(&(_ic)->ic_beaconlock)
    #define IEEE80211_BEACON_UNLOCK(_ic)       mtx_unlock(&(_ic)->ic_beaconlock)
    #define IEEE80211_BEACON_LOCK_ASSERT(_ic) \
            mtx_assert(&(_ic)->ic_beaconlock, MA_OWNED)
    
    /*
     * Node locking definitions.
     * NB: MTX_DUPOK is because we don't generate per-interface strings.
     */
    typedef struct mtx ieee80211_node_lock_t;
    #define IEEE80211_NODE_LOCK_INIT(_nt, _name) \
            mtx_init(&(_nt)->nt_nodelock, _name, "802.11 node table", \
                    MTX_DEF | MTX_DUPOK)
    #define IEEE80211_NODE_LOCK_DESTROY(_nt)        mtx_destroy(&(_nt)->nt_nodelock)
    #define IEEE80211_NODE_LOCK(_nt)                mtx_lock(&(_nt)->nt_nodelock)
    #define IEEE80211_NODE_IS_LOCKED(_nt)           mtx_owned(&(_nt)->nt_nodelock)
    #define IEEE80211_NODE_UNLOCK(_nt)              mtx_unlock(&(_nt)->nt_nodelock)
    #define IEEE80211_NODE_LOCK_ASSERT(_nt) \
            mtx_assert(&(_nt)->nt_nodelock, MA_OWNED)
    
    /*
     * Node table scangen locking definitions.
     */
    typedef struct mtx ieee80211_scan_lock_t;
    #define IEEE80211_SCAN_LOCK_INIT(_nt, _name) \
            mtx_init(&(_nt)->nt_scanlock, _name, "802.11 scangen", MTX_DEF)
    #define IEEE80211_SCAN_LOCK_DESTROY(_nt)        mtx_destroy(&(_nt)->nt_scanlock)
    #define IEEE80211_SCAN_LOCK(_nt)                mtx_lock(&(_nt)->nt_scanlock)
    #define IEEE80211_SCAN_UNLOCK(_nt)              mtx_unlock(&(_nt)->nt_scanlock)
    #define IEEE80211_SCAN_LOCK_ASSERT(_nt) \
            mtx_assert(&(_nt)->nt_scanlock, MA_OWNED)
    
    /*
     * Per-node power-save queue definitions. 
     */
    #define IEEE80211_NODE_SAVEQ_INIT(_ni, _name) do {              \
            mtx_init(&(_ni)->ni_savedq.ifq_mtx, _name, "802.11 ps queue", MTX_DEF);\
            (_ni)->ni_savedq.ifq_maxlen = IEEE80211_PS_MAX_QUEUE;   \
    } while (0)
    #define IEEE80211_NODE_SAVEQ_DESTROY(_ni) \
            mtx_destroy(&(_ni)->ni_savedq.ifq_mtx)
    #define IEEE80211_NODE_SAVEQ_QLEN(_ni) \
            _IF_QLEN(&(_ni)->ni_savedq)
    #define IEEE80211_NODE_SAVEQ_LOCK(_ni) do {     \
            IF_LOCK(&(_ni)->ni_savedq);                             \
    } while (0)
    #define IEEE80211_NODE_SAVEQ_UNLOCK(_ni) do {   \
            IF_UNLOCK(&(_ni)->ni_savedq);                           \
    } while (0)
    #define IEEE80211_NODE_SAVEQ_DEQUEUE(_ni, _m, _qlen) do {       \
            IEEE80211_NODE_SAVEQ_LOCK(_ni);                         \
            _IF_DEQUEUE(&(_ni)->ni_savedq, _m);                     \
            (_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni);               \
            IEEE80211_NODE_SAVEQ_UNLOCK(_ni);                       \
    } while (0)
    #define IEEE80211_NODE_SAVEQ_DRAIN(_ni, _qlen) do {             \
            IEEE80211_NODE_SAVEQ_LOCK(_ni);                         \
            (_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni);               \
            _IF_DRAIN(&(_ni)->ni_savedq);                           \
            IEEE80211_NODE_SAVEQ_UNLOCK(_ni);                       \
   } while (0)
   /* XXX could be optimized */
   #define _IEEE80211_NODE_SAVEQ_DEQUEUE_HEAD(_ni, _m) do {        \
           _IF_DEQUEUE(&(_ni)->ni_savedq, m);                      \
   } while (0)
   #define _IEEE80211_NODE_SAVEQ_ENQUEUE(_ni, _m, _qlen, _age) do {\
           (_m)->m_nextpkt = NULL;                                 \
           if ((_ni)->ni_savedq.ifq_tail != NULL) {                \
                   _age -= M_AGE_GET((_ni)->ni_savedq.ifq_tail);   \
                   (_ni)->ni_savedq.ifq_tail->m_nextpkt = (_m);    \
           } else {                                                \
                   (_ni)->ni_savedq.ifq_head = (_m);               \
           }                                                       \
           M_AGE_SET(_m, _age);                                    \
           (_ni)->ni_savedq.ifq_tail = (_m);                       \
           (_qlen) = ++(_ni)->ni_savedq.ifq_len;                   \
   } while (0)
   
   #ifndef IF_PREPEND_LIST
   #define _IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do {        \
           (mtail)->m_nextpkt = (ifq)->ifq_head;                   \
           if ((ifq)->ifq_tail == NULL)                            \
                   (ifq)->ifq_tail = (mtail);                      \
           (ifq)->ifq_head = (mhead);                              \
           (ifq)->ifq_len += (mcount);                             \
   } while (0)
   #define IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do {         \
           IF_LOCK(ifq);                                           \
           _IF_PREPEND_LIST(ifq, mhead, mtail, mcount);            \
           IF_UNLOCK(ifq);                                         \
   } while (0)
   #endif /* IF_PREPEND_LIST */
   
   /*
    * 802.1x MAC ACL database locking definitions.
    */
   typedef struct mtx acl_lock_t;
   #define ACL_LOCK_INIT(_as, _name) \
           mtx_init(&(_as)->as_lock, _name, "802.11 ACL", MTX_DEF)
   #define ACL_LOCK_DESTROY(_as)           mtx_destroy(&(_as)->as_lock)
   #define ACL_LOCK(_as)                   mtx_lock(&(_as)->as_lock)
   #define ACL_UNLOCK(_as)                 mtx_unlock(&(_as)->as_lock)
   #define ACL_LOCK_ASSERT(_as) \
           mtx_assert((&(_as)->as_lock), MA_OWNED)
   
   /*
    * Node reference counting definitions.
    *
    * ieee80211_node_initref       initialize the reference count to 1
    * ieee80211_node_incref        add a reference
    * ieee80211_node_decref        remove a reference
    * ieee80211_node_dectestref    remove a reference and return 1 if this
    *                              is the last reference, otherwise 0
    * ieee80211_node_refcnt        reference count for printing (only)
    */
   #include <machine/atomic.h>
   
   #define ieee80211_node_initref(_ni) \
           do { ((_ni)->ni_refcnt = 1); } while (0)
   #define ieee80211_node_incref(_ni) \
           atomic_add_int(&(_ni)->ni_refcnt, 1)
   #define ieee80211_node_decref(_ni) \
           atomic_subtract_int(&(_ni)->ni_refcnt, 1)
   struct ieee80211_node;
   int     ieee80211_node_dectestref(struct ieee80211_node *ni);
   #define ieee80211_node_refcnt(_ni)      (_ni)->ni_refcnt
   
   void    ieee80211_drain_ifq(struct ifqueue *);
   
   struct mbuf *ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen);
   #define M_LINK0         M_PROTO1                /* WEP requested */
   #define M_PWR_SAV       M_PROTO4                /* bypass PS handling */
   #define M_MORE_DATA     M_PROTO5                /* more data frames to follow */
   /*
    * Encode WME access control bits in the PROTO flags.
    * This is safe since it's passed directly in to the
    * driver and there's no chance someone else will clobber
    * them on us.
    */
   #define M_WME_AC_MASK   (M_PROTO2|M_PROTO3)
   /* XXX 5 is wrong if M_PROTO* are redefined */
   #define M_WME_AC_SHIFT  5
   
   #define M_WME_SETAC(m, ac) \
           ((m)->m_flags = ((m)->m_flags &~ M_WME_AC_MASK) | \
                   ((ac) << M_WME_AC_SHIFT))
   #define M_WME_GETAC(m)  (((m)->m_flags >> M_WME_AC_SHIFT) & 0x3)
   
   /*
    * Mbufs on the power save queue are tagged with an age and
    * timed out.  We reuse the hardware checksum field in the
    * mbuf packet header to store this data.
    */
   #define M_AGE_SET(m,v)          (m->m_pkthdr.csum_data = v)
   #define M_AGE_GET(m)            (m->m_pkthdr.csum_data)
   #define M_AGE_SUB(m,adj)        (m->m_pkthdr.csum_data -= adj)
   
   void    get_random_bytes(void *, size_t);
   
   struct ieee80211com;
   
   void    ieee80211_sysctl_attach(struct ieee80211com *);
   void    ieee80211_sysctl_detach(struct ieee80211com *);
   
   void    ieee80211_load_module(const char *);
   #endif /* _KERNEL */
   
   /* XXX this stuff belongs elsewhere */
   /*
    * Message formats for messages from the net80211 layer to user
    * applications via the routing socket.  These messages are appended
    * to an if_announcemsghdr structure.
    */
   struct ieee80211_join_event {
           uint8_t         iev_addr[6];
   };
   
   struct ieee80211_leave_event {
           uint8_t         iev_addr[6];
   };
   
   struct ieee80211_replay_event {
           uint8_t         iev_src[6];     /* src MAC */
           uint8_t         iev_dst[6];     /* dst MAC */
           uint8_t         iev_cipher;     /* cipher type */
           uint8_t         iev_keyix;      /* key id/index */
           uint64_t        iev_keyrsc;     /* RSC from key */
           uint64_t        iev_rsc;        /* RSC from frame */
   };
   
   struct ieee80211_michael_event {
           uint8_t         iev_src[6];     /* src MAC */
           uint8_t         iev_dst[6];     /* dst MAC */
           uint8_t         iev_cipher;     /* cipher type */
           uint8_t         iev_keyix;      /* key id/index */
   };
   
   #define RTM_IEEE80211_ASSOC     100     /* station associate (bss mode) */
   #define RTM_IEEE80211_REASSOC   101     /* station re-associate (bss mode) */
   #define RTM_IEEE80211_DISASSOC  102     /* station disassociate (bss mode) */
   #define RTM_IEEE80211_JOIN      103     /* station join (ap mode) */
   #define RTM_IEEE80211_LEAVE     104     /* station leave (ap mode) */
   #define RTM_IEEE80211_SCAN      105     /* scan complete, results available */
   #define RTM_IEEE80211_REPLAY    106     /* sequence counter replay detected */
   #define RTM_IEEE80211_MICHAEL   107     /* Michael MIC failure detected */
   #define RTM_IEEE80211_REJOIN    108     /* station re-associate (ap mode) */
   
   #endif /* _NET80211_IEEE80211_FREEBSD_H_ */

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