357 lines
13 KiB
C
357 lines
13 KiB
C
/*-
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* Copyright (c) 2003-2007 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET80211_IEEE80211_FREEBSD_H_
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#define _NET80211_IEEE80211_FREEBSD_H_
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#ifdef _KERNEL
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/*
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* Common state locking definitions.
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*/
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typedef struct mtx ieee80211_com_lock_t;
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#define IEEE80211_LOCK_INIT(_ic, _name) \
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mtx_init(&(_ic)->ic_comlock, _name, "802.11 com lock", MTX_DEF)
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#define IEEE80211_LOCK_DESTROY(_ic) mtx_destroy(&(_ic)->ic_comlock)
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#define IEEE80211_LOCK(_ic) mtx_lock(&(_ic)->ic_comlock)
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#define IEEE80211_UNLOCK(_ic) mtx_unlock(&(_ic)->ic_comlock)
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#define IEEE80211_LOCK_ASSERT(_ic) \
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mtx_assert(&(_ic)->ic_comlock, MA_OWNED)
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/*
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* Beacon locking definitions.
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*/
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typedef struct mtx ieee80211_beacon_lock_t;
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#define IEEE80211_BEACON_LOCK_INIT(_ic, _name) \
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mtx_init(&(_ic)->ic_beaconlock, _name, "802.11 beacon lock", MTX_DEF)
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#define IEEE80211_BEACON_LOCK_DESTROY(_ic) mtx_destroy(&(_ic)->ic_beaconlock)
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#define IEEE80211_BEACON_LOCK(_ic) mtx_lock(&(_ic)->ic_beaconlock)
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#define IEEE80211_BEACON_UNLOCK(_ic) mtx_unlock(&(_ic)->ic_beaconlock)
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#define IEEE80211_BEACON_LOCK_ASSERT(_ic) \
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mtx_assert(&(_ic)->ic_beaconlock, MA_OWNED)
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/*
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* Node locking definitions.
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* NB: MTX_DUPOK is because we don't generate per-interface strings.
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*/
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typedef struct mtx ieee80211_node_lock_t;
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#define IEEE80211_NODE_LOCK_INIT(_nt, _name) \
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mtx_init(&(_nt)->nt_nodelock, _name, "802.11 node table", \
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MTX_DEF | MTX_DUPOK)
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#define IEEE80211_NODE_LOCK_DESTROY(_nt) mtx_destroy(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_LOCK(_nt) mtx_lock(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_IS_LOCKED(_nt) mtx_owned(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_UNLOCK(_nt) mtx_unlock(&(_nt)->nt_nodelock)
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#define IEEE80211_NODE_LOCK_ASSERT(_nt) \
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mtx_assert(&(_nt)->nt_nodelock, MA_OWNED)
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/*
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* Node table scangen locking definitions.
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*/
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typedef struct mtx ieee80211_scan_lock_t;
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#define IEEE80211_SCAN_LOCK_INIT(_nt, _name) \
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mtx_init(&(_nt)->nt_scanlock, _name, "802.11 node scangen", MTX_DEF)
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#define IEEE80211_SCAN_LOCK_DESTROY(_nt) mtx_destroy(&(_nt)->nt_scanlock)
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#define IEEE80211_SCAN_LOCK(_nt) mtx_lock(&(_nt)->nt_scanlock)
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#define IEEE80211_SCAN_UNLOCK(_nt) mtx_unlock(&(_nt)->nt_scanlock)
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#define IEEE80211_SCAN_LOCK_ASSERT(_nt) \
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mtx_assert(&(_nt)->nt_scanlock, MA_OWNED)
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/*
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* Per-node power-save queue definitions.
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*/
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#define IEEE80211_NODE_SAVEQ_INIT(_ni, _name) do { \
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mtx_init(&(_ni)->ni_savedq.ifq_mtx, _name, "802.11 ps queue", MTX_DEF);\
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(_ni)->ni_savedq.ifq_maxlen = IEEE80211_PS_MAX_QUEUE; \
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} while (0)
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#define IEEE80211_NODE_SAVEQ_DESTROY(_ni) \
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mtx_destroy(&(_ni)->ni_savedq.ifq_mtx)
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#define IEEE80211_NODE_SAVEQ_QLEN(_ni) \
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_IF_QLEN(&(_ni)->ni_savedq)
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#define IEEE80211_NODE_SAVEQ_LOCK(_ni) do { \
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IF_LOCK(&(_ni)->ni_savedq); \
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} while (0)
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#define IEEE80211_NODE_SAVEQ_UNLOCK(_ni) do { \
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IF_UNLOCK(&(_ni)->ni_savedq); \
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} while (0)
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#define IEEE80211_NODE_SAVEQ_DEQUEUE(_ni, _m, _qlen) do { \
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IEEE80211_NODE_SAVEQ_LOCK(_ni); \
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_IF_DEQUEUE(&(_ni)->ni_savedq, _m); \
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(_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni); \
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IEEE80211_NODE_SAVEQ_UNLOCK(_ni); \
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} while (0)
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#define IEEE80211_NODE_SAVEQ_DRAIN(_ni, _qlen) do { \
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IEEE80211_NODE_SAVEQ_LOCK(_ni); \
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(_qlen) = IEEE80211_NODE_SAVEQ_QLEN(_ni); \
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_IF_DRAIN(&(_ni)->ni_savedq); \
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IEEE80211_NODE_SAVEQ_UNLOCK(_ni); \
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} while (0)
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/* XXX could be optimized */
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#define _IEEE80211_NODE_SAVEQ_DEQUEUE_HEAD(_ni, _m) do { \
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_IF_DEQUEUE(&(_ni)->ni_savedq, m); \
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} while (0)
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#define _IEEE80211_NODE_SAVEQ_ENQUEUE(_ni, _m, _qlen, _age) do {\
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(_m)->m_nextpkt = NULL; \
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if ((_ni)->ni_savedq.ifq_tail != NULL) { \
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_age -= M_AGE_GET((_ni)->ni_savedq.ifq_tail); \
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(_ni)->ni_savedq.ifq_tail->m_nextpkt = (_m); \
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} else { \
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(_ni)->ni_savedq.ifq_head = (_m); \
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} \
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M_AGE_SET(_m, _age); \
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(_ni)->ni_savedq.ifq_tail = (_m); \
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(_qlen) = ++(_ni)->ni_savedq.ifq_len; \
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} while (0)
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#define IEEE80211_TAPQ_INIT(_tap) do { \
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mtx_init(&(tap)->txa_q.ifq_mtx, "ampdu tx queue", NULL, MTX_DEF); \
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(_tap)->txa_q.ifq_maxlen = IEEE80211_AGGR_BAWMAX; \
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} while (0)
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#define IEEE80211_TAPQ_DESTROY(_tap) \
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mtx_destroy(&(_tap)->txa_q.ifq_mtx)
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#ifndef IF_PREPEND_LIST
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#define _IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do { \
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(mtail)->m_nextpkt = (ifq)->ifq_head; \
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if ((ifq)->ifq_tail == NULL) \
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(ifq)->ifq_tail = (mtail); \
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(ifq)->ifq_head = (mhead); \
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(ifq)->ifq_len += (mcount); \
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} while (0)
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#define IF_PREPEND_LIST(ifq, mhead, mtail, mcount) do { \
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IF_LOCK(ifq); \
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_IF_PREPEND_LIST(ifq, mhead, mtail, mcount); \
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IF_UNLOCK(ifq); \
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} while (0)
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#endif /* IF_PREPEND_LIST */
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/*
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* 802.1x MAC ACL database locking definitions.
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*/
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typedef struct mtx acl_lock_t;
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#define ACL_LOCK_INIT(_as, _name) \
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mtx_init(&(_as)->as_lock, _name, "802.11 ACL", MTX_DEF)
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#define ACL_LOCK_DESTROY(_as) mtx_destroy(&(_as)->as_lock)
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#define ACL_LOCK(_as) mtx_lock(&(_as)->as_lock)
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#define ACL_UNLOCK(_as) mtx_unlock(&(_as)->as_lock)
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#define ACL_LOCK_ASSERT(_as) \
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mtx_assert((&(_as)->as_lock), MA_OWNED)
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/*
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* Node reference counting definitions.
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*
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* ieee80211_node_initref initialize the reference count to 1
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* ieee80211_node_incref add a reference
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* ieee80211_node_decref remove a reference
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* ieee80211_node_dectestref remove a reference and return 1 if this
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* is the last reference, otherwise 0
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* ieee80211_node_refcnt reference count for printing (only)
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*/
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#include <machine/atomic.h>
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#define ieee80211_node_initref(_ni) \
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do { ((_ni)->ni_refcnt = 1); } while (0)
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#define ieee80211_node_incref(_ni) \
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atomic_add_int(&(_ni)->ni_refcnt, 1)
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#define ieee80211_node_decref(_ni) \
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atomic_subtract_int(&(_ni)->ni_refcnt, 1)
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struct ieee80211_node;
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int ieee80211_node_dectestref(struct ieee80211_node *ni);
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#define ieee80211_node_refcnt(_ni) (_ni)->ni_refcnt
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struct ifqueue;
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void ieee80211_drain_ifq(struct ifqueue *);
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#define msecs_to_ticks(ms) (((ms)*hz)/1000)
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#define ticks_to_msecs(t) ((t) / hz)
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#define time_after(a,b) ((long)(b) - (long)(a) < 0)
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#define time_before(a,b) time_after(b,a)
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#define time_after_eq(a,b) ((long)(a) - (long)(b) >= 0)
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#define time_before_eq(a,b) time_after_eq(b,a)
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struct mbuf *ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen);
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/* tx path usage */
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#define M_LINK0 M_PROTO1 /* WEP requested */
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#define M_PWR_SAV M_PROTO4 /* bypass PS handling */
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#define M_MORE_DATA M_PROTO5 /* more data frames to follow */
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#define M_FF 0x20000 /* fast frame */
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#define M_TXCB 0x40000 /* do tx complete callback */
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#define M_80211_TX (0x60000|M_PROTO1|M_WME_AC_MASK|M_PROTO4|M_PROTO5)
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/* rx path usage */
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#define M_AMPDU M_PROTO1 /* A-MPDU processing done */
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#define M_WEP M_PROTO2 /* WEP done by hardware */
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#define M_80211_RX (M_AMPDU|M_WEP)
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/*
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* Encode WME access control bits in the PROTO flags.
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* This is safe since it's passed directly in to the
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* driver and there's no chance someone else will clobber
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* them on us.
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*/
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#define M_WME_AC_MASK (M_PROTO2|M_PROTO3)
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/* XXX 5 is wrong if M_PROTO* are redefined */
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#define M_WME_AC_SHIFT 5
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#define M_WME_SETAC(m, ac) \
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((m)->m_flags = ((m)->m_flags &~ M_WME_AC_MASK) | \
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((ac) << M_WME_AC_SHIFT))
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#define M_WME_GETAC(m) (((m)->m_flags >> M_WME_AC_SHIFT) & 0x3)
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/*
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* Mbufs on the power save queue are tagged with an age and
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* timed out. We reuse the hardware checksum field in the
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* mbuf packet header to store this data.
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*/
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#define M_AGE_SET(m,v) (m->m_pkthdr.csum_data = v)
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#define M_AGE_GET(m) (m->m_pkthdr.csum_data)
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#define M_AGE_SUB(m,adj) (m->m_pkthdr.csum_data -= adj)
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#define MTAG_ABI_NET80211 1132948340 /* net80211 ABI */
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struct ieee80211_cb {
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void (*func)(struct ieee80211_node *, void *, int status);
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void *arg;
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};
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#define NET80211_TAG_CALLBACK 0 /* xmit complete callback */
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int ieee80211_add_callback(struct mbuf *m,
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void (*func)(struct ieee80211_node *, void *, int), void *arg);
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void ieee80211_process_callback(struct ieee80211_node *, struct mbuf *, int);
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void get_random_bytes(void *, size_t);
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struct ieee80211com;
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void ieee80211_sysctl_attach(struct ieee80211com *);
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void ieee80211_sysctl_detach(struct ieee80211com *);
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void ieee80211_load_module(const char *);
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#define IEEE80211_CRYPTO_MODULE(name, version) \
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static int \
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name##_modevent(module_t mod, int type, void *unused) \
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{ \
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switch (type) { \
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case MOD_LOAD: \
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ieee80211_crypto_register(&name); \
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return 0; \
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case MOD_UNLOAD: \
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case MOD_QUIESCE: \
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if (nrefs) { \
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printf("wlan_##name: still in use (%u dynamic refs)\n",\
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nrefs); \
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return EBUSY; \
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} \
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if (type == MOD_UNLOAD) \
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ieee80211_crypto_unregister(&name); \
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return 0; \
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} \
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return EINVAL; \
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} \
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static moduledata_t name##_mod = { \
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"wlan_" #name, \
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name##_modevent, \
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0 \
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}; \
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DECLARE_MODULE(wlan_##name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);\
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MODULE_VERSION(wlan_##name, version); \
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MODULE_DEPEND(wlan_##name, wlan, 1, 1, 1)
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#endif /* _KERNEL */
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/* XXX this stuff belongs elsewhere */
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/*
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* Message formats for messages from the net80211 layer to user
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* applications via the routing socket. These messages are appended
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* to an if_announcemsghdr structure.
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*/
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struct ieee80211_join_event {
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uint8_t iev_addr[6];
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};
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struct ieee80211_leave_event {
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uint8_t iev_addr[6];
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};
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struct ieee80211_replay_event {
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uint8_t iev_src[6]; /* src MAC */
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uint8_t iev_dst[6]; /* dst MAC */
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uint8_t iev_cipher; /* cipher type */
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uint8_t iev_keyix; /* key id/index */
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uint64_t iev_keyrsc; /* RSC from key */
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uint64_t iev_rsc; /* RSC from frame */
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};
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struct ieee80211_michael_event {
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uint8_t iev_src[6]; /* src MAC */
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uint8_t iev_dst[6]; /* dst MAC */
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uint8_t iev_cipher; /* cipher type */
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uint8_t iev_keyix; /* key id/index */
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};
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#define RTM_IEEE80211_ASSOC 100 /* station associate (bss mode) */
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#define RTM_IEEE80211_REASSOC 101 /* station re-associate (bss mode) */
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#define RTM_IEEE80211_DISASSOC 102 /* station disassociate (bss mode) */
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#define RTM_IEEE80211_JOIN 103 /* station join (ap mode) */
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#define RTM_IEEE80211_LEAVE 104 /* station leave (ap mode) */
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#define RTM_IEEE80211_SCAN 105 /* scan complete, results available */
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#define RTM_IEEE80211_REPLAY 106 /* sequence counter replay detected */
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#define RTM_IEEE80211_MICHAEL 107 /* Michael MIC failure detected */
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#define RTM_IEEE80211_REJOIN 108 /* station re-associate (ap mode) */
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/*
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* Structure prepended to raw packets sent through the bpf
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* interface when set to DLT_IEEE802_11_RADIO. This allows
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* user applications to specify pretty much everything in
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* an Atheros tx descriptor. XXX need to generalize.
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*
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* XXX cannot be more than 14 bytes as it is copied to a sockaddr's
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* XXX sa_data area.
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*/
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struct ieee80211_bpf_params {
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uint8_t ibp_vers; /* version */
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#define IEEE80211_BPF_VERSION 0
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uint8_t ibp_len; /* header length in bytes */
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uint8_t ibp_flags;
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#define IEEE80211_BPF_SHORTPRE 0x01 /* tx with short preamble */
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#define IEEE80211_BPF_NOACK 0x02 /* tx with no ack */
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#define IEEE80211_BPF_CRYPTO 0x04 /* tx with h/w encryption */
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#define IEEE80211_BPF_FCS 0x10 /* frame incldues FCS */
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#define IEEE80211_BPF_DATAPAD 0x20 /* frame includes data padding */
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#define IEEE80211_BPF_RTS 0x40 /* tx with RTS/CTS */
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#define IEEE80211_BPF_CTS 0x80 /* tx with CTS only */
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uint8_t ibp_pri; /* WME/WMM AC+tx antenna */
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uint8_t ibp_try0; /* series 1 try count */
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uint8_t ibp_rate0; /* series 1 IEEE tx rate */
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uint8_t ibp_power; /* tx power (device units) */
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uint8_t ibp_ctsrate; /* IEEE tx rate for CTS */
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uint8_t ibp_try1; /* series 2 try count */
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uint8_t ibp_rate1; /* series 2 IEEE tx rate */
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uint8_t ibp_try2; /* series 3 try count */
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uint8_t ibp_rate2; /* series 3 IEEE tx rate */
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uint8_t ibp_try3; /* series 4 try count */
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uint8_t ibp_rate3; /* series 4 IEEE tx rate */
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};
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#endif /* _NET80211_IEEE80211_FREEBSD_H_ */
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