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3c141a7e1d
freebsd/sys/net80211/ieee80211_node.h
Rui Paulo b6108616ac net80211 rate control framework (net80211 ratectl). 
This framework allows drivers to abstract the rate control algorithm and
just feed the framework with the usable parameters. The rate control
framework will now deal with passing the parameters to the selected
algorithm. Right now we have AMRR (the default) and RSSADAPT but there's
no way to select one with ifconfig, yet.
The objective is to have more rate control algorithms in the net80211
stack so all drivers[0] can use it. Ideally, we'll have the well-known
sample rate control algorithm in the net80211 at some point so all
drivers can use it (not just ath).

[0] all drivers that do rate control in software, that is.

Reviewed by:	bschmidt, thompsa, weyongo
MFC after:	1 months
2010-04-07 15:29:13 +00:00

457 lines
20 KiB
C
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/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2009 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.
*
* 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.
*
* $FreeBSD$
*/
#ifndef _NET80211_IEEE80211_NODE_H_
#define _NET80211_IEEE80211_NODE_H_
#include <net80211/ieee80211_ioctl.h> /* for ieee80211_nodestats */
#include <net80211/ieee80211_ht.h> /* for aggregation state */
/*
* Each ieee80211com instance has a single timer that fires every
* IEEE80211_INACT_WAIT seconds to handle "inactivity processing".
* This is used to do node inactivity processing when operating
* as an AP, adhoc or mesh mode. For inactivity processing each node
* has a timeout set in it's ni_inact field that is decremented
* on each timeout and the node is reclaimed when the counter goes
* to zero. We use different inactivity timeout values depending
* on whether the node is associated and authorized (either by
* 802.1x or open/shared key authentication) or associated but yet
* to be authorized. The latter timeout is shorter to more aggressively
* reclaim nodes that leave part way through the 802.1x exchange.
*/
#define IEEE80211_INACT_WAIT 15 /* inactivity interval (secs) */
#define IEEE80211_INACT_INIT (30/IEEE80211_INACT_WAIT) /* initial */
#define IEEE80211_INACT_AUTH (180/IEEE80211_INACT_WAIT) /* associated but not authorized */
#define IEEE80211_INACT_RUN (300/IEEE80211_INACT_WAIT) /* authorized */
#define IEEE80211_INACT_PROBE (30/IEEE80211_INACT_WAIT) /* probe */
#define IEEE80211_INACT_SCAN (300/IEEE80211_INACT_WAIT) /* scanned */
#define IEEE80211_TRANS_WAIT 2 /* mgt frame tx timer (secs) */
/* threshold for aging overlapping non-ERP bss */
#define IEEE80211_NONERP_PRESENT_AGE msecs_to_ticks(60*1000)
#define IEEE80211_NODE_HASHSIZE 32 /* NB: hash size must be pow2 */
/* simple hash is enough for variation of macaddr */
#define IEEE80211_NODE_HASH(ic, addr) \
(((const uint8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % \
IEEE80211_NODE_HASHSIZE)
struct ieee80211_node_table;
struct ieee80211com;
struct ieee80211vap;
/*
* Information element ``blob''. We use this structure
* to capture management frame payloads that need to be
* retained. Information elements within the payload that
* we need to consult have references recorded.
*/
struct ieee80211_ies {
/* the following are either NULL or point within data */
uint8_t *wpa_ie; /* captured WPA ie */
uint8_t *rsn_ie; /* captured RSN ie */
uint8_t *wme_ie; /* captured WME ie */
uint8_t *ath_ie; /* captured Atheros ie */
uint8_t *htcap_ie; /* captured HTCAP ie */
uint8_t *htinfo_ie; /* captured HTINFO ie */
uint8_t *tdma_ie; /* captured TDMA ie */
uint8_t *meshid_ie; /* captured MESH ID ie */
uint8_t *spare[4];
/* NB: these must be the last members of this structure */
uint8_t *data; /* frame data > 802.11 header */
int len; /* data size in bytes */
};
/*
* 802.11s (Mesh) Peer Link FSM state.
*/
enum ieee80211_mesh_mlstate {
IEEE80211_NODE_MESH_IDLE = 0,
IEEE80211_NODE_MESH_OPENSNT = 1, /* open frame sent */
IEEE80211_NODE_MESH_OPENRCV = 2, /* open frame received */
IEEE80211_NODE_MESH_CONFIRMRCV = 3, /* confirm frame received */
IEEE80211_NODE_MESH_ESTABLISHED = 4, /* link established */
IEEE80211_NODE_MESH_HOLDING = 5, /* link closing */
};
#define IEEE80211_MESH_MLSTATE_BITS \
"\20\1IDLE\2OPENSNT\2OPENRCV\3CONFIRMRCV\4ESTABLISHED\5HOLDING"
/*
* Node specific information. Note that drivers are expected
* to derive from this structure to add device-specific per-node
* state. This is done by overriding the ic_node_* methods in
* the ieee80211com structure.
*/
struct ieee80211_node {
struct ieee80211vap *ni_vap; /* associated vap */
struct ieee80211com *ni_ic; /* copy from vap to save deref*/
struct ieee80211_node_table *ni_table; /* NB: may be NULL */
TAILQ_ENTRY(ieee80211_node) ni_list; /* list of all nodes */
LIST_ENTRY(ieee80211_node) ni_hash; /* hash collision list */
u_int ni_refcnt; /* count of held references */
u_int ni_scangen; /* gen# for timeout scan */
u_int ni_flags;
#define IEEE80211_NODE_AUTH 0x000001 /* authorized for data */
#define IEEE80211_NODE_QOS 0x000002 /* QoS enabled */
#define IEEE80211_NODE_ERP 0x000004 /* ERP enabled */
/* NB: this must have the same value as IEEE80211_FC1_PWR_MGT */
#define IEEE80211_NODE_PWR_MGT 0x000010 /* power save mode enabled */
#define IEEE80211_NODE_AREF 0x000020 /* authentication ref held */
#define IEEE80211_NODE_HT 0x000040 /* HT enabled */
#define IEEE80211_NODE_HTCOMPAT 0x000080 /* HT setup w/ vendor OUI's */
#define IEEE80211_NODE_WPS 0x000100 /* WPS association */
#define IEEE80211_NODE_TSN 0x000200 /* TSN association */
#define IEEE80211_NODE_AMPDU_RX 0x000400 /* AMPDU rx enabled */
#define IEEE80211_NODE_AMPDU_TX 0x000800 /* AMPDU tx enabled */
#define IEEE80211_NODE_MIMO_PS 0x001000 /* MIMO power save enabled */
#define IEEE80211_NODE_MIMO_RTS 0x002000 /* send RTS in MIMO PS */
#define IEEE80211_NODE_RIFS 0x004000 /* RIFS enabled */
#define IEEE80211_NODE_SGI20 0x008000 /* Short GI in HT20 enabled */
#define IEEE80211_NODE_SGI40 0x010000 /* Short GI in HT40 enabled */
#define IEEE80211_NODE_ASSOCID 0x020000 /* xmit requires associd */
#define IEEE80211_NODE_AMSDU_RX 0x040000 /* AMSDU rx enabled */
#define IEEE80211_NODE_AMSDU_TX 0x080000 /* AMSDU tx enabled */
uint16_t ni_associd; /* association ID */
uint16_t ni_vlan; /* vlan tag */
uint16_t ni_txpower; /* current transmit power */
uint8_t ni_authmode; /* authentication algorithm */
uint8_t ni_ath_flags; /* Atheros feature flags */
/* NB: These must have the same values as IEEE80211_ATHC_* */
#define IEEE80211_NODE_TURBOP 0x0001 /* Turbo prime enable */
#define IEEE80211_NODE_COMP 0x0002 /* Compresssion enable */
#define IEEE80211_NODE_FF 0x0004 /* Fast Frame capable */
#define IEEE80211_NODE_XR 0x0008 /* Atheros WME enable */
#define IEEE80211_NODE_AR 0x0010 /* AR capable */
#define IEEE80211_NODE_BOOST 0x0080 /* Dynamic Turbo boosted */
uint16_t ni_ath_defkeyix;/* Atheros def key index */
const struct ieee80211_txparam *ni_txparms;
uint32_t ni_jointime; /* time of join (secs) */
uint32_t *ni_challenge; /* shared-key challenge */
struct ieee80211_ies ni_ies; /* captured ie's */
/* tx seq per-tid */
ieee80211_seq ni_txseqs[IEEE80211_TID_SIZE];
/* rx seq previous per-tid*/
ieee80211_seq ni_rxseqs[IEEE80211_TID_SIZE];
uint32_t ni_rxfragstamp; /* time stamp of last rx frag */
struct mbuf *ni_rxfrag[3]; /* rx frag reassembly */
struct ieee80211_key ni_ucastkey; /* unicast key */
/* hardware */
uint32_t ni_avgrssi; /* recv ssi state */
int8_t ni_noise; /* noise floor */
/* header */
uint8_t ni_macaddr[IEEE80211_ADDR_LEN];
uint8_t ni_bssid[IEEE80211_ADDR_LEN];
/* beacon, probe response */
union {
uint8_t data[8];
u_int64_t tsf;
} ni_tstamp; /* from last rcv'd beacon */
uint16_t ni_intval; /* beacon interval */
uint16_t ni_capinfo; /* capabilities */
uint8_t ni_esslen;
uint8_t ni_essid[IEEE80211_NWID_LEN];
struct ieee80211_rateset ni_rates; /* negotiated rate set */
struct ieee80211_channel *ni_chan;
uint16_t ni_fhdwell; /* FH only */
uint8_t ni_fhindex; /* FH only */
uint16_t ni_erp; /* ERP from beacon/probe resp */
uint16_t ni_timoff; /* byte offset to TIM ie */
uint8_t ni_dtim_period; /* DTIM period */
uint8_t ni_dtim_count; /* DTIM count for last bcn */
/* 11s state */
uint8_t ni_meshidlen;
uint8_t ni_meshid[IEEE80211_MESHID_LEN];
enum ieee80211_mesh_mlstate ni_mlstate; /* peering management state */
uint16_t ni_mllid; /* link local ID */
uint16_t ni_mlpid; /* link peer ID */
struct callout ni_mltimer; /* link mesh timer */
uint8_t ni_mlrcnt; /* link mesh retry counter */
uint8_t ni_mltval; /* link mesh timer value */
/* 11n state */
uint16_t ni_htcap; /* HT capabilities */
uint8_t ni_htparam; /* HT params */
uint8_t ni_htctlchan; /* HT control channel */
uint8_t ni_ht2ndchan; /* HT 2nd channel */
uint8_t ni_htopmode; /* HT operating mode */
uint8_t ni_htstbc; /* HT */
uint8_t ni_chw; /* negotiated channel width */
struct ieee80211_htrateset ni_htrates; /* negotiated ht rate set */
struct ieee80211_tx_ampdu ni_tx_ampdu[WME_NUM_AC];
struct ieee80211_rx_ampdu ni_rx_ampdu[WME_NUM_TID];
/* others */
short ni_inact; /* inactivity mark count */
short ni_inact_reload;/* inactivity reload value */
int ni_txrate; /* legacy rate/MCS */
struct ieee80211_psq ni_psq; /* power save queue */
struct ieee80211_nodestats ni_stats; /* per-node statistics */
struct ieee80211vap *ni_wdsvap; /* associated WDS vap */
void *ni_rctls; /* private ratectl state */
uint64_t ni_spare[3];
};
MALLOC_DECLARE(M_80211_NODE);
MALLOC_DECLARE(M_80211_NODE_IE);
#define IEEE80211_NODE_ATH (IEEE80211_NODE_FF | IEEE80211_NODE_TURBOP)
#define IEEE80211_NODE_AMPDU \
(IEEE80211_NODE_AMPDU_RX | IEEE80211_NODE_AMPDU_TX)
#define IEEE80211_NODE_AMSDU \
(IEEE80211_NODE_AMSDU_RX | IEEE80211_NODE_AMSDU_TX)
#define IEEE80211_NODE_HT_ALL \
(IEEE80211_NODE_HT | IEEE80211_NODE_HTCOMPAT | \
IEEE80211_NODE_AMPDU | IEEE80211_NODE_AMSDU | \
IEEE80211_NODE_MIMO_PS | IEEE80211_NODE_MIMO_RTS | \
IEEE80211_NODE_RIFS | IEEE80211_NODE_SGI20 | IEEE80211_NODE_SGI40)
#define IEEE80211_NODE_BITS \
"\20\1AUTH\2QOS\3ERP\5PWR_MGT\6AREF\7HT\10HTCOMPAT\11WPS\12TSN" \
"\13AMPDU_RX\14AMPDU_TX\15MIMO_PS\16MIMO_RTS\17RIFS\20SGI20\21SGI40" \
"\22ASSOCID"
#define IEEE80211_NODE_AID(ni) IEEE80211_AID(ni->ni_associd)
#define IEEE80211_NODE_STAT(ni,stat) (ni->ni_stats.ns_##stat++)
#define IEEE80211_NODE_STAT_ADD(ni,stat,v) (ni->ni_stats.ns_##stat += v)
#define IEEE80211_NODE_STAT_SET(ni,stat,v) (ni->ni_stats.ns_##stat = v)
/*
* Filtered rssi calculation support. The receive rssi is maintained
* as an average over the last 10 frames received using a low pass filter
* (all frames for now, possibly need to be more selective). Calculations
* are designed such that a good compiler can optimize them. The avg
* rssi state should be initialized to IEEE80211_RSSI_DUMMY_MARKER and
* each sample incorporated with IEEE80211_RSSI_LPF. Use IEEE80211_RSSI_GET
* to extract the current value.
*
* Note that we assume rssi data are in the range [-127..127] and we
* discard values <-20. This is consistent with assumptions throughout
* net80211 that signal strength data are in .5 dBm units relative to
* the current noise floor (linear, not log).
*/
#define IEEE80211_RSSI_LPF_LEN 10
#define IEEE80211_RSSI_DUMMY_MARKER 127
/* NB: pow2 to optimize out * and / */
#define IEEE80211_RSSI_EP_MULTIPLIER (1<<7)
#define IEEE80211_RSSI_IN(x) ((x) * IEEE80211_RSSI_EP_MULTIPLIER)
#define _IEEE80211_RSSI_LPF(x, y, len) \
(((x) != IEEE80211_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
#define IEEE80211_RSSI_LPF(x, y) do { \
if ((y) >= -20) { \
x = _IEEE80211_RSSI_LPF((x), IEEE80211_RSSI_IN((y)), \
IEEE80211_RSSI_LPF_LEN); \
} \
} while (0)
#define IEEE80211_RSSI_EP_RND(x, mul) \
((((x) % (mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
#define IEEE80211_RSSI_GET(x) \
IEEE80211_RSSI_EP_RND(x, IEEE80211_RSSI_EP_MULTIPLIER)
static __inline struct ieee80211_node *
ieee80211_ref_node(struct ieee80211_node *ni)
{
ieee80211_node_incref(ni);
return ni;
}
static __inline void
ieee80211_unref_node(struct ieee80211_node **ni)
{
ieee80211_node_decref(*ni);
*ni = NULL; /* guard against use */
}
struct ieee80211com;
void ieee80211_node_attach(struct ieee80211com *);
void ieee80211_node_lateattach(struct ieee80211com *);
void ieee80211_node_detach(struct ieee80211com *);
void ieee80211_node_vattach(struct ieee80211vap *);
void ieee80211_node_latevattach(struct ieee80211vap *);
void ieee80211_node_vdetach(struct ieee80211vap *);
static __inline int
ieee80211_node_is_authorized(const struct ieee80211_node *ni)
{
return (ni->ni_flags & IEEE80211_NODE_AUTH);
}
void ieee80211_node_authorize(struct ieee80211_node *);
void ieee80211_node_unauthorize(struct ieee80211_node *);
void ieee80211_node_setuptxparms(struct ieee80211_node *);
void ieee80211_node_set_chan(struct ieee80211_node *,
struct ieee80211_channel *);
void ieee80211_create_ibss(struct ieee80211vap*, struct ieee80211_channel *);
void ieee80211_reset_bss(struct ieee80211vap *);
void ieee80211_sync_curchan(struct ieee80211com *);
void ieee80211_setupcurchan(struct ieee80211com *,
struct ieee80211_channel *);
void ieee80211_setcurchan(struct ieee80211com *, struct ieee80211_channel *);
int ieee80211_ibss_merge(struct ieee80211_node *);
struct ieee80211_scan_entry;
int ieee80211_sta_join(struct ieee80211vap *, struct ieee80211_channel *,
const struct ieee80211_scan_entry *);
void ieee80211_sta_leave(struct ieee80211_node *);
void ieee80211_node_deauth(struct ieee80211_node *, int);
int ieee80211_ies_init(struct ieee80211_ies *, const uint8_t *, int);
void ieee80211_ies_cleanup(struct ieee80211_ies *);
void ieee80211_ies_expand(struct ieee80211_ies *);
#define ieee80211_ies_setie(_ies, _ie, _off) do { \
(_ies)._ie = (_ies).data + (_off); \
} while (0)
/*
* Table of ieee80211_node instances. Each ieee80211com
* has one that holds association stations (when operating
* as an ap) or neighbors (in ibss mode).
*
* XXX embed this in ieee80211com instead of indirect?
*/
struct ieee80211_node_table {
struct ieee80211com *nt_ic; /* back reference */
ieee80211_node_lock_t nt_nodelock; /* on node table */
TAILQ_HEAD(, ieee80211_node) nt_node; /* information of all nodes */
LIST_HEAD(, ieee80211_node) nt_hash[IEEE80211_NODE_HASHSIZE];
struct ieee80211_node **nt_keyixmap; /* key ix -> node map */
int nt_keyixmax; /* keyixmap size */
const char *nt_name; /* table name for debug msgs */
ieee80211_scan_lock_t nt_scanlock; /* on nt_scangen */
u_int nt_scangen; /* gen# for iterators */
int nt_inact_init; /* initial node inact setting */
};
struct ieee80211_node *ieee80211_alloc_node(struct ieee80211_node_table *,
struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node *ieee80211_tmp_node(struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node *ieee80211_dup_bss(struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node *ieee80211_node_create_wds(struct ieee80211vap *,
const uint8_t bssid[IEEE80211_ADDR_LEN],
struct ieee80211_channel *);
#ifdef IEEE80211_DEBUG_REFCNT
void ieee80211_free_node_debug(struct ieee80211_node *,
const char *func, int line);
struct ieee80211_node *ieee80211_find_node_locked_debug(
struct ieee80211_node_table *,
const uint8_t macaddr[IEEE80211_ADDR_LEN],
const char *func, int line);
struct ieee80211_node *ieee80211_find_node_debug(struct ieee80211_node_table *,
const uint8_t macaddr[IEEE80211_ADDR_LEN],
const char *func, int line);
struct ieee80211_node *ieee80211_find_vap_node_locked_debug(
struct ieee80211_node_table *,
const struct ieee80211vap *vap,
const uint8_t macaddr[IEEE80211_ADDR_LEN],
const char *func, int line);
struct ieee80211_node *ieee80211_find_vap_node_debug(
struct ieee80211_node_table *,
const struct ieee80211vap *vap,
const uint8_t macaddr[IEEE80211_ADDR_LEN],
const char *func, int line);
struct ieee80211_node * ieee80211_find_rxnode_debug(struct ieee80211com *,
const struct ieee80211_frame_min *,
const char *func, int line);
struct ieee80211_node * ieee80211_find_rxnode_withkey_debug(
struct ieee80211com *,
const struct ieee80211_frame_min *, uint16_t keyix,
const char *func, int line);
struct ieee80211_node *ieee80211_find_txnode_debug(struct ieee80211vap *,
const uint8_t *,
const char *func, int line);
#define ieee80211_free_node(ni) \
ieee80211_free_node_debug(ni, __func__, __LINE__)
#define ieee80211_find_node_locked(nt, mac) \
ieee80211_find_node_locked_debug(nt, mac, __func__, __LINE__)
#define ieee80211_find_node(nt, mac) \
ieee80211_find_node_debug(nt, mac, __func__, __LINE__)
#define ieee80211_find_vap_node_locked(nt, vap, mac) \
ieee80211_find_vap_node_locked_debug(nt, vap, mac, __func__, __LINE__)
#define ieee80211_find_vap_node(nt, vap, mac) \
ieee80211_find_vap_node_debug(nt, vap, mac, __func__, __LINE__)
#define ieee80211_find_rxnode(ic, wh) \
ieee80211_find_rxnode_debug(ic, wh, __func__, __LINE__)
#define ieee80211_find_rxnode_withkey(ic, wh, keyix) \
ieee80211_find_rxnode_withkey_debug(ic, wh, keyix, __func__, __LINE__)
#define ieee80211_find_txnode(vap, mac) \
ieee80211_find_txnode_debug(vap, mac, __func__, __LINE__)
#else
void ieee80211_free_node(struct ieee80211_node *);
struct ieee80211_node *ieee80211_find_node_locked(struct ieee80211_node_table *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node *ieee80211_find_node(struct ieee80211_node_table *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node *ieee80211_find_vap_node_locked(
struct ieee80211_node_table *, const struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node *ieee80211_find_vap_node(
struct ieee80211_node_table *, const struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_node * ieee80211_find_rxnode(struct ieee80211com *,
const struct ieee80211_frame_min *);
struct ieee80211_node * ieee80211_find_rxnode_withkey(struct ieee80211com *,
const struct ieee80211_frame_min *, uint16_t keyix);
struct ieee80211_node *ieee80211_find_txnode(struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
#endif
int ieee80211_node_delucastkey(struct ieee80211_node *);
void ieee80211_node_timeout(void *arg);
typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
void ieee80211_iterate_nodes(struct ieee80211_node_table *,
ieee80211_iter_func *, void *);
void ieee80211_notify_erp(struct ieee80211com *);
void ieee80211_dump_node(struct ieee80211_node_table *,
struct ieee80211_node *);
void ieee80211_dump_nodes(struct ieee80211_node_table *);
struct ieee80211_node *ieee80211_fakeup_adhoc_node(struct ieee80211vap *,
const uint8_t macaddr[IEEE80211_ADDR_LEN]);
struct ieee80211_scanparams;
void ieee80211_init_neighbor(struct ieee80211_node *,
const struct ieee80211_frame *,
const struct ieee80211_scanparams *);
struct ieee80211_node *ieee80211_add_neighbor(struct ieee80211vap *,
const struct ieee80211_frame *,
const struct ieee80211_scanparams *);
void ieee80211_node_join(struct ieee80211_node *,int);
void ieee80211_node_leave(struct ieee80211_node *);
int8_t ieee80211_getrssi(struct ieee80211vap *);
void ieee80211_getsignal(struct ieee80211vap *, int8_t *, int8_t *);
#endif /* _NET80211_IEEE80211_NODE_H_ */
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