957458a836
* Call it before sending probe responses, so the ACL code has the chance to reject sending them. * Pass the whole frame to the ACL code now, rather than just the destination MAC - that way the ACL module can look at the frame contents to determine what the response should be. This is part of some uncommitted work to support band steering. Sponsored by: Hobnob, Inc.
417 lines
17 KiB
C
417 lines
17 KiB
C
/*-
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* Copyright (c) 2001 Atsushi Onoe
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* Copyright (c) 2002-2009 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_PROTO_H_
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#define _NET80211_IEEE80211_PROTO_H_
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/*
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* 802.11 protocol implementation definitions.
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*/
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enum ieee80211_state {
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IEEE80211_S_INIT = 0, /* default state */
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IEEE80211_S_SCAN = 1, /* scanning */
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IEEE80211_S_AUTH = 2, /* try to authenticate */
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IEEE80211_S_ASSOC = 3, /* try to assoc */
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IEEE80211_S_CAC = 4, /* doing channel availability check */
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IEEE80211_S_RUN = 5, /* operational (e.g. associated) */
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IEEE80211_S_CSA = 6, /* channel switch announce pending */
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IEEE80211_S_SLEEP = 7, /* power save */
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};
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#define IEEE80211_S_MAX (IEEE80211_S_SLEEP+1)
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#define IEEE80211_SEND_MGMT(_ni,_type,_arg) \
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((*(_ni)->ni_ic->ic_send_mgmt)(_ni, _type, _arg))
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extern const char *ieee80211_mgt_subtype_name[];
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extern const char *ieee80211_phymode_name[IEEE80211_MODE_MAX];
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extern const int ieee80211_opcap[IEEE80211_OPMODE_MAX];
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void ieee80211_proto_attach(struct ieee80211com *);
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void ieee80211_proto_detach(struct ieee80211com *);
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void ieee80211_proto_vattach(struct ieee80211vap *);
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void ieee80211_proto_vdetach(struct ieee80211vap *);
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void ieee80211_syncifflag_locked(struct ieee80211com *, int flag);
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void ieee80211_syncflag(struct ieee80211vap *, int flag);
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void ieee80211_syncflag_ht(struct ieee80211vap *, int flag);
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void ieee80211_syncflag_ext(struct ieee80211vap *, int flag);
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#define IEEE80211_R_NF 0x0000001 /* global NF value valid */
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#define IEEE80211_R_RSSI 0x0000002 /* global RSSI value valid */
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#define IEEE80211_R_C_CHAIN 0x0000004 /* RX chain count valid */
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#define IEEE80211_R_C_NF 0x0000008 /* per-chain NF value valid */
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#define IEEE80211_R_C_RSSI 0x0000010 /* per-chain RSSI value valid */
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#define IEEE80211_R_C_EVM 0x0000020 /* per-chain EVM valid */
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#define IEEE80211_R_C_HT40 0x0000040 /* RX'ed packet is 40mhz, pilots 4,5 valid */
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struct ieee80211_rx_stats {
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uint32_t r_flags; /* IEEE80211_R_* flags */
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uint8_t c_chain; /* number of RX chains involved */
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int16_t c_nf_ctl[IEEE80211_MAX_CHAINS]; /* per-chain NF */
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int16_t c_nf_ext[IEEE80211_MAX_CHAINS]; /* per-chain NF */
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int16_t c_rssi_ctl[IEEE80211_MAX_CHAINS]; /* per-chain RSSI */
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int16_t c_rssi_ext[IEEE80211_MAX_CHAINS]; /* per-chain RSSI */
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uint8_t nf; /* global NF */
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uint8_t rssi; /* global RSSI */
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uint8_t evm[IEEE80211_MAX_CHAINS][IEEE80211_MAX_EVM_PILOTS];
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/* per-chain, per-pilot EVM values */
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};
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#define ieee80211_input(ni, m, rssi, nf) \
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((ni)->ni_vap->iv_input(ni, m, rssi, nf))
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int ieee80211_input_all(struct ieee80211com *, struct mbuf *, int, int);
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int ieee80211_input_mimo(struct ieee80211_node *, struct mbuf *,
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struct ieee80211_rx_stats *);
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int ieee80211_input_mimo_all(struct ieee80211com *, struct mbuf *,
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struct ieee80211_rx_stats *);
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struct ieee80211_bpf_params;
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int ieee80211_mgmt_output(struct ieee80211_node *, struct mbuf *, int,
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struct ieee80211_bpf_params *);
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int ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *,
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const struct ieee80211_bpf_params *);
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int ieee80211_output(struct ifnet *, struct mbuf *,
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struct sockaddr *, struct route *ro);
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void ieee80211_send_setup(struct ieee80211_node *, struct mbuf *, int, int,
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const uint8_t [IEEE80211_ADDR_LEN], const uint8_t [IEEE80211_ADDR_LEN],
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const uint8_t [IEEE80211_ADDR_LEN]);
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void ieee80211_start(struct ifnet *);
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int ieee80211_send_nulldata(struct ieee80211_node *);
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int ieee80211_classify(struct ieee80211_node *, struct mbuf *m);
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struct mbuf *ieee80211_mbuf_adjust(struct ieee80211vap *, int,
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struct ieee80211_key *, struct mbuf *);
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struct mbuf *ieee80211_encap(struct ieee80211vap *, struct ieee80211_node *,
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struct mbuf *);
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int ieee80211_send_mgmt(struct ieee80211_node *, int, int);
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struct ieee80211_appie;
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int ieee80211_send_probereq(struct ieee80211_node *ni,
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const uint8_t sa[IEEE80211_ADDR_LEN],
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const uint8_t da[IEEE80211_ADDR_LEN],
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const uint8_t bssid[IEEE80211_ADDR_LEN],
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const uint8_t *ssid, size_t ssidlen);
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/*
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* The formation of ProbeResponse frames requires guidance to
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* deal with legacy clients. When the client is identified as
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* "legacy 11b" ieee80211_send_proberesp is passed this token.
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*/
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#define IEEE80211_SEND_LEGACY_11B 0x1 /* legacy 11b client */
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#define IEEE80211_SEND_LEGACY_11 0x2 /* other legacy client */
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#define IEEE80211_SEND_LEGACY 0x3 /* any legacy client */
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struct mbuf *ieee80211_alloc_proberesp(struct ieee80211_node *, int);
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int ieee80211_send_proberesp(struct ieee80211vap *,
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const uint8_t da[IEEE80211_ADDR_LEN], int);
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struct mbuf *ieee80211_alloc_rts(struct ieee80211com *ic,
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const uint8_t [IEEE80211_ADDR_LEN],
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const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
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struct mbuf *ieee80211_alloc_cts(struct ieee80211com *,
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const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
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uint8_t *ieee80211_add_rates(uint8_t *, const struct ieee80211_rateset *);
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uint8_t *ieee80211_add_xrates(uint8_t *, const struct ieee80211_rateset *);
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uint16_t ieee80211_getcapinfo(struct ieee80211vap *,
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struct ieee80211_channel *);
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void ieee80211_reset_erp(struct ieee80211com *);
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void ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
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int ieee80211_iserp_rateset(const struct ieee80211_rateset *);
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void ieee80211_setbasicrates(struct ieee80211_rateset *,
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enum ieee80211_phymode);
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void ieee80211_addbasicrates(struct ieee80211_rateset *,
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enum ieee80211_phymode);
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/*
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* Return the size of the 802.11 header for a management or data frame.
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*/
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static __inline int
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ieee80211_hdrsize(const void *data)
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{
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const struct ieee80211_frame *wh = data;
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int size = sizeof(struct ieee80211_frame);
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/* NB: we don't handle control frames */
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KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
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("%s: control frame", __func__));
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if (IEEE80211_IS_DSTODS(wh))
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size += IEEE80211_ADDR_LEN;
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if (IEEE80211_QOS_HAS_SEQ(wh))
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size += sizeof(uint16_t);
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return size;
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}
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/*
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* Like ieee80211_hdrsize, but handles any type of frame.
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*/
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static __inline int
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ieee80211_anyhdrsize(const void *data)
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{
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const struct ieee80211_frame *wh = data;
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if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
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switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
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case IEEE80211_FC0_SUBTYPE_CTS:
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case IEEE80211_FC0_SUBTYPE_ACK:
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return sizeof(struct ieee80211_frame_ack);
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case IEEE80211_FC0_SUBTYPE_BAR:
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return sizeof(struct ieee80211_frame_bar);
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}
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return sizeof(struct ieee80211_frame_min);
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} else
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return ieee80211_hdrsize(data);
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}
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/*
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* Template for an in-kernel authenticator. Authenticators
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* register with the protocol code and are typically loaded
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* as separate modules as needed. One special authenticator
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* is xauth; it intercepts requests so that protocols like
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* WPA can be handled in user space.
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*/
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struct ieee80211_authenticator {
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const char *ia_name; /* printable name */
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int (*ia_attach)(struct ieee80211vap *);
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void (*ia_detach)(struct ieee80211vap *);
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void (*ia_node_join)(struct ieee80211_node *);
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void (*ia_node_leave)(struct ieee80211_node *);
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};
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void ieee80211_authenticator_register(int type,
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const struct ieee80211_authenticator *);
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void ieee80211_authenticator_unregister(int type);
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const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
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struct ieee80211req;
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/*
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* Template for an MAC ACL policy module. Such modules
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* register with the protocol code and are passed the sender's
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* address of each received auth frame for validation.
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*/
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struct ieee80211_aclator {
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const char *iac_name; /* printable name */
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int (*iac_attach)(struct ieee80211vap *);
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void (*iac_detach)(struct ieee80211vap *);
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int (*iac_check)(struct ieee80211vap *,
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const struct ieee80211_frame *wh,
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const uint8_t mac[IEEE80211_ADDR_LEN]);
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int (*iac_add)(struct ieee80211vap *,
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const uint8_t mac[IEEE80211_ADDR_LEN]);
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int (*iac_remove)(struct ieee80211vap *,
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const uint8_t mac[IEEE80211_ADDR_LEN]);
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int (*iac_flush)(struct ieee80211vap *);
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int (*iac_setpolicy)(struct ieee80211vap *, int);
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int (*iac_getpolicy)(struct ieee80211vap *);
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int (*iac_setioctl)(struct ieee80211vap *, struct ieee80211req *);
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int (*iac_getioctl)(struct ieee80211vap *, struct ieee80211req *);
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};
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void ieee80211_aclator_register(const struct ieee80211_aclator *);
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void ieee80211_aclator_unregister(const struct ieee80211_aclator *);
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const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
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/* flags for ieee80211_fix_rate() */
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#define IEEE80211_F_DOSORT 0x00000001 /* sort rate list */
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#define IEEE80211_F_DOFRATE 0x00000002 /* use fixed legacy rate */
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#define IEEE80211_F_DONEGO 0x00000004 /* calc negotiated rate */
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#define IEEE80211_F_DODEL 0x00000008 /* delete ignore rate */
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#define IEEE80211_F_DOBRS 0x00000010 /* check basic rate set */
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#define IEEE80211_F_JOIN 0x00000020 /* sta joining our bss */
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#define IEEE80211_F_DOFMCS 0x00000040 /* use fixed HT rate */
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int ieee80211_fix_rate(struct ieee80211_node *,
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struct ieee80211_rateset *, int);
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/*
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* WME/WMM support.
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*/
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struct wmeParams {
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uint8_t wmep_acm;
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uint8_t wmep_aifsn;
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uint8_t wmep_logcwmin; /* log2(cwmin) */
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uint8_t wmep_logcwmax; /* log2(cwmax) */
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uint8_t wmep_txopLimit;
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uint8_t wmep_noackPolicy; /* 0 (ack), 1 (no ack) */
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};
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#define IEEE80211_TXOP_TO_US(_txop) ((_txop)<<5)
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#define IEEE80211_US_TO_TXOP(_us) ((_us)>>5)
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struct chanAccParams {
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uint8_t cap_info; /* version of the current set */
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struct wmeParams cap_wmeParams[WME_NUM_AC];
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};
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struct ieee80211_wme_state {
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u_int wme_flags;
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#define WME_F_AGGRMODE 0x00000001 /* STATUS: WME agressive mode */
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u_int wme_hipri_traffic; /* VI/VO frames in beacon interval */
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u_int wme_hipri_switch_thresh;/* agressive mode switch thresh */
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u_int wme_hipri_switch_hysteresis;/* agressive mode switch hysteresis */
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struct wmeParams wme_params[4]; /* from assoc resp for each AC*/
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struct chanAccParams wme_wmeChanParams; /* WME params applied to self */
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struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
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struct chanAccParams wme_chanParams; /* params applied to self */
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struct chanAccParams wme_bssChanParams; /* params bcast to stations */
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int (*wme_update)(struct ieee80211com *);
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};
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void ieee80211_wme_initparams(struct ieee80211vap *);
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void ieee80211_wme_updateparams(struct ieee80211vap *);
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void ieee80211_wme_updateparams_locked(struct ieee80211vap *);
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/*
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* Return the WME TID from a QoS frame. If no TID
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* is present return the index for the "non-QoS" entry.
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*/
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static __inline uint8_t
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ieee80211_gettid(const struct ieee80211_frame *wh)
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{
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uint8_t tid;
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if (IEEE80211_QOS_HAS_SEQ(wh)) {
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if (IEEE80211_IS_DSTODS(wh))
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tid = ((const struct ieee80211_qosframe_addr4 *)wh)->
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i_qos[0];
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else
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tid = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
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tid &= IEEE80211_QOS_TID;
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} else
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tid = IEEE80211_NONQOS_TID;
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return tid;
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}
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void ieee80211_waitfor_parent(struct ieee80211com *);
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void ieee80211_start_locked(struct ieee80211vap *);
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void ieee80211_init(void *);
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void ieee80211_start_all(struct ieee80211com *);
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void ieee80211_stop_locked(struct ieee80211vap *);
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void ieee80211_stop(struct ieee80211vap *);
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void ieee80211_stop_all(struct ieee80211com *);
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void ieee80211_suspend_all(struct ieee80211com *);
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void ieee80211_resume_all(struct ieee80211com *);
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void ieee80211_dturbo_switch(struct ieee80211vap *, int newflags);
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void ieee80211_swbmiss(void *arg);
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void ieee80211_beacon_miss(struct ieee80211com *);
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int ieee80211_new_state(struct ieee80211vap *, enum ieee80211_state, int);
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void ieee80211_print_essid(const uint8_t *, int);
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void ieee80211_dump_pkt(struct ieee80211com *,
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const uint8_t *, int, int, int);
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extern const char *ieee80211_opmode_name[];
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extern const char *ieee80211_state_name[IEEE80211_S_MAX];
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extern const char *ieee80211_wme_acnames[];
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/*
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* Beacon frames constructed by ieee80211_beacon_alloc
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* have the following structure filled in so drivers
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* can update the frame later w/ minimal overhead.
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*/
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struct ieee80211_beacon_offsets {
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uint8_t bo_flags[4]; /* update/state flags */
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uint16_t *bo_caps; /* capabilities */
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uint8_t *bo_cfp; /* start of CFParms element */
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uint8_t *bo_tim; /* start of atim/dtim */
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uint8_t *bo_wme; /* start of WME parameters */
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uint8_t *bo_tdma; /* start of TDMA parameters */
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uint8_t *bo_tim_trailer;/* start of fixed-size trailer */
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uint16_t bo_tim_len; /* atim/dtim length in bytes */
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uint16_t bo_tim_trailer_len;/* tim trailer length in bytes */
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uint8_t *bo_erp; /* start of ERP element */
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uint8_t *bo_htinfo; /* start of HT info element */
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uint8_t *bo_ath; /* start of ATH parameters */
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uint8_t *bo_appie; /* start of AppIE element */
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uint16_t bo_appie_len; /* AppIE length in bytes */
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uint16_t bo_csa_trailer_len;
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uint8_t *bo_csa; /* start of CSA element */
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uint8_t *bo_quiet; /* start of Quiet element */
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uint8_t *bo_meshconf; /* start of MESHCONF element */
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uint8_t *bo_spare[3];
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};
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struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *,
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struct ieee80211_beacon_offsets *);
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/*
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* Beacon frame updates are signaled through calls to iv_update_beacon
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* with one of the IEEE80211_BEACON_* tokens defined below. For devices
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* that construct beacon frames on the host this can trigger a rebuild
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* or defer the processing. For devices that offload beacon frame
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* handling this callback can be used to signal a rebuild. The bo_flags
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* array in the ieee80211_beacon_offsets structure is intended to record
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* deferred processing requirements; ieee80211_beacon_update uses the
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* state to optimize work. Since this structure is owned by the driver
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* and not visible to the 802.11 layer drivers must supply an iv_update_beacon
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* callback that marks the flag bits and schedules (as necessary) an update.
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*/
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enum {
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IEEE80211_BEACON_CAPS = 0, /* capabilities */
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IEEE80211_BEACON_TIM = 1, /* DTIM/ATIM */
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IEEE80211_BEACON_WME = 2,
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IEEE80211_BEACON_ERP = 3, /* Extended Rate Phy */
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IEEE80211_BEACON_HTINFO = 4, /* HT Information */
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IEEE80211_BEACON_APPIE = 5, /* Application IE's */
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IEEE80211_BEACON_CFP = 6, /* CFParms */
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IEEE80211_BEACON_CSA = 7, /* Channel Switch Announcement */
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IEEE80211_BEACON_TDMA = 9, /* TDMA Info */
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IEEE80211_BEACON_ATH = 10, /* ATH parameters */
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IEEE80211_BEACON_MESHCONF = 11, /* Mesh Configuration */
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};
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int ieee80211_beacon_update(struct ieee80211_node *,
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struct ieee80211_beacon_offsets *, struct mbuf *, int mcast);
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void ieee80211_csa_startswitch(struct ieee80211com *,
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struct ieee80211_channel *, int mode, int count);
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void ieee80211_csa_completeswitch(struct ieee80211com *);
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void ieee80211_csa_cancelswitch(struct ieee80211com *);
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void ieee80211_cac_completeswitch(struct ieee80211vap *);
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/*
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* Notification methods called from the 802.11 state machine.
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* Note that while these are defined here, their implementation
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* is OS-specific.
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*/
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void ieee80211_notify_node_join(struct ieee80211_node *, int newassoc);
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void ieee80211_notify_node_leave(struct ieee80211_node *);
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void ieee80211_notify_scan_done(struct ieee80211vap *);
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void ieee80211_notify_wds_discover(struct ieee80211_node *);
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void ieee80211_notify_csa(struct ieee80211com *,
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const struct ieee80211_channel *, int mode, int count);
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void ieee80211_notify_radar(struct ieee80211com *,
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const struct ieee80211_channel *);
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enum ieee80211_notify_cac_event {
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IEEE80211_NOTIFY_CAC_START = 0, /* CAC timer started */
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IEEE80211_NOTIFY_CAC_STOP = 1, /* CAC intentionally stopped */
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IEEE80211_NOTIFY_CAC_RADAR = 2, /* CAC stopped due to radar detectio */
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IEEE80211_NOTIFY_CAC_EXPIRE = 3, /* CAC expired w/o radar */
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};
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void ieee80211_notify_cac(struct ieee80211com *,
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const struct ieee80211_channel *,
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enum ieee80211_notify_cac_event);
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void ieee80211_notify_node_deauth(struct ieee80211_node *);
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void ieee80211_notify_node_auth(struct ieee80211_node *);
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void ieee80211_notify_country(struct ieee80211vap *, const uint8_t [],
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const uint8_t cc[2]);
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void ieee80211_notify_radio(struct ieee80211com *, int);
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#endif /* _NET80211_IEEE80211_PROTO_H_ */
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