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src/sys/net80211/ieee80211_node.h

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/* $OpenBSD: ieee80211_node.h,v 1.94 2022/03/20 12:01:58 stsp Exp $ */
/* $NetBSD: ieee80211_node.h,v 1.9 2004/04/30 22:57:32 dyoung Exp $ */
/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002, 2003 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: src/sys/net80211/ieee80211_node.h,v 1.10 2004/04/05 22:10:26 sam Exp $
*/
#ifndef _NET80211_IEEE80211_NODE_H_
#define _NET80211_IEEE80211_NODE_H_
#include <sys/tree.h>
#define IEEE80211_PSCAN_WAIT 5 /* passive scan wait */
#define IEEE80211_TRANS_WAIT 5 /* transition wait */
#define IEEE80211_INACT_WAIT 5 /* inactivity timer interval */
#define IEEE80211_INACT_MAX (300/IEEE80211_INACT_WAIT)
#define IEEE80211_CACHE_SIZE 512
#define IEEE80211_CACHE_WAIT 30
#define IEEE80211_INACT_SCAN 10 /* for station mode */
struct ieee80211_rateset {
u_int8_t rs_nrates;
u_int8_t rs_rates[IEEE80211_RATE_MAXSIZE];
};
extern const struct ieee80211_rateset ieee80211_std_rateset_11a;
extern const struct ieee80211_rateset ieee80211_std_rateset_11b;
extern const struct ieee80211_rateset ieee80211_std_rateset_11g;
/* Index into ieee80211_std_rateset_11n[] array. */
#define IEEE80211_HT_RATESET_SISO 0
#define IEEE80211_HT_RATESET_SISO_SGI 1
#define IEEE80211_HT_RATESET_MIMO2 2
#define IEEE80211_HT_RATESET_MIMO2_SGI 3
#define IEEE80211_HT_RATESET_MIMO3 4
#define IEEE80211_HT_RATESET_MIMO3_SGI 5
#define IEEE80211_HT_RATESET_MIMO4 6
#define IEEE80211_HT_RATESET_MIMO4_SGI 7
#define IEEE80211_HT_RATESET_SISO_40 8
#define IEEE80211_HT_RATESET_SISO_SGI40 9
#define IEEE80211_HT_RATESET_MIMO2_40 10
#define IEEE80211_HT_RATESET_MIMO2_SGI40 11
#define IEEE80211_HT_RATESET_MIMO3_40 12
#define IEEE80211_HT_RATESET_MIMO3_SGI40 13
#define IEEE80211_HT_RATESET_MIMO4_40 14
#define IEEE80211_HT_RATESET_MIMO4_SGI40 15
#define IEEE80211_HT_NUM_RATESETS 16
/* Maximum number of rates in a HT rateset. */
#define IEEE80211_HT_RATESET_MAX_NRATES 8
/* Number of MCS indices represented by struct ieee80211_ht_rateset. */
#define IEEE80211_HT_RATESET_NUM_MCS 32
struct ieee80211_ht_rateset {
uint32_t nrates;
uint32_t rates[IEEE80211_HT_RATESET_MAX_NRATES]; /* 500 kbit/s units */
/*
* This bitmask can only express MCS 0 - MCS 31.
* IEEE 802.11 defined 77 HT MCS in total but common hardware
* implementations tend to support MCS index 0 through 31 only.
*/
uint32_t mcs_mask;
/* Range of MCS indices represented in this rateset. */
int min_mcs;
int max_mcs;
int chan40;
int sgi;
};
extern const struct ieee80211_ht_rateset ieee80211_std_ratesets_11n[];
/* Index into ieee80211_std_rateset_11ac[] array. */
#define IEEE80211_VHT_RATESET_SISO 0
#define IEEE80211_VHT_RATESET_SISO_SGI 1
#define IEEE80211_VHT_RATESET_MIMO2 2
#define IEEE80211_VHT_RATESET_MIMO2_SGI 3
#define IEEE80211_VHT_RATESET_SISO_40 4
#define IEEE80211_VHT_RATESET_SISO_40_SGI 5
#define IEEE80211_VHT_RATESET_MIMO2_40 6
#define IEEE80211_VHT_RATESET_MIMO2_40_SGI 7
#define IEEE80211_VHT_RATESET_SISO_80 8
#define IEEE80211_VHT_RATESET_SISO_80_SGI 9
#define IEEE80211_VHT_RATESET_MIMO2_80 10
#define IEEE80211_VHT_RATESET_MIMO2_80_SGI 11
#define IEEE80211_VHT_NUM_RATESETS 12
/* Maximum number of rates in a VHT rateset. */
#define IEEE80211_VHT_RATESET_MAX_NRATES 10
struct ieee80211_vht_rateset {
int idx; /* This rateset's index in ieee80211_std_rateset_11ac[]. */
uint32_t nrates;
uint32_t rates[IEEE80211_VHT_RATESET_MAX_NRATES]; /* 500 kbit/s units */
/* Number of spatial streams used by rates in this rateset. */
int num_ss;
int chan40;
int chan80;
int sgi;
};
extern const struct ieee80211_vht_rateset ieee80211_std_ratesets_11ac[];
enum ieee80211_node_state {
IEEE80211_STA_CACHE, /* cached node */
IEEE80211_STA_BSS, /* ic->ic_bss, the network we joined */
IEEE80211_STA_AUTH, /* successfully authenticated */
IEEE80211_STA_ASSOC, /* successfully associated */
IEEE80211_STA_COLLECT /* This node remains in the cache while
* the driver sends a de-auth message;
* afterward it should be freed to make room
* for a new node.
*/
};
#define ieee80211_node_newstate(__ni, __state) \
do { \
(__ni)->ni_state = (__state); \
} while (0)
enum ieee80211_node_psstate {
IEEE80211_PS_AWAKE,
IEEE80211_PS_DOZE
};
#define IEEE80211_PS_MAX_QUEUE 50 /* maximum saved packets */
/* Authenticator state machine: 4-Way Handshake (see 8.5.6.1.1) */
enum {
RSNA_INITIALIZE,
RSNA_AUTHENTICATION,
RSNA_AUTHENTICATION_2,
RSNA_INITPMK,
RSNA_INITPSK,
RSNA_PTKSTART,
RSNA_PTKCALCNEGOTIATING,
RSNA_PTKCALCNEGOTIATING_2,
RSNA_PTKINITNEGOTIATING,
RSNA_PTKINITDONE,
RSNA_DISCONNECT,
RSNA_DISCONNECTED
};
/* Authenticator state machine: Group Key Handshake (see 8.5.6.1.2) */
enum {
RSNA_IDLE,
RSNA_REKEYNEGOTIATING,
RSNA_REKEYESTABLISHED,
RSNA_KEYERROR
};
/* Supplicant state machine: 4-Way Handshake (not documented in standard) */
enum {
RSNA_SUPP_INITIALIZE, /* not expecting any messages */
RSNA_SUPP_PTKSTART, /* awaiting handshake message 1 */
RSNA_SUPP_PTKNEGOTIATING, /* got message 1 and derived PTK */
RSNA_SUPP_PTKDONE /* got message 3 and authenticated AP */
};
struct ieee80211_rxinfo {
u_int32_t rxi_flags;
u_int32_t rxi_tstamp;
int rxi_rssi;
uint8_t rxi_chan;
};
#define IEEE80211_RXI_HWDEC 0x00000001
#define IEEE80211_RXI_AMPDU_DONE 0x00000002
#define IEEE80211_RXI_HWDEC_SAME_PN 0x00000004
#define IEEE80211_RXI_SAME_SEQ 0x00000008
/* Block Acknowledgement Record */
struct ieee80211_tx_ba {
struct ieee80211_node *ba_ni; /* backpointer for callbacks */
struct timeout ba_to;
int ba_timeout_val;
int ba_state;
#define IEEE80211_BA_INIT 0
#define IEEE80211_BA_REQUESTED 1
#define IEEE80211_BA_AGREED 2
/* ADDBA parameter set field for this BA agreement. */
u_int16_t ba_params;
/* These values are IEEE802.11 frame sequence numbers (0x0-0xfff) */
u_int16_t ba_winstart;
u_int16_t ba_winend;
/* Number of A-MPDU subframes in reorder buffer. */
u_int16_t ba_winsize;
#define IEEE80211_BA_MAX_WINSZ 64 /* corresponds to maximum ADDBA BUFSZ */
u_int8_t ba_token;
/* Bitmap for ACK'd frames in the current BA window. */
uint64_t ba_bitmap;
};
struct ieee80211_rx_ba {
struct ieee80211_node *ba_ni; /* backpointer for callbacks */
struct {
struct mbuf *m;
struct ieee80211_rxinfo rxi;
} *ba_buf;
struct timeout ba_to;
int ba_timeout_val;
int ba_state;
u_int16_t ba_params;
u_int16_t ba_winstart;
u_int16_t ba_winend;
u_int16_t ba_winsize;
u_int16_t ba_head;
struct timeout ba_gap_to;
#define IEEE80211_BA_GAP_TIMEOUT 300 /* msec */
/*
* Counter for frames forced to wait in the reordering buffer
* due to a leading gap caused by one or more missing frames.
*/
int ba_gapwait;
/* Counter for consecutive frames which missed the BA window. */
int ba_winmiss;
/* Sequence number of previous frame which missed the BA window. */
uint16_t ba_missedsn;
/* Window moves forward after this many frames have missed it. */
#define IEEE80211_BA_MAX_WINMISS 8
uint8_t ba_token;
};
/*
* 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 {
RBT_ENTRY(ieee80211_node) ni_node;
struct ieee80211com *ni_ic; /* back-pointer */
u_int ni_refcnt;
u_int ni_scangen; /* gen# for timeout scan */
/* hardware */
u_int32_t ni_rstamp; /* recv timestamp */
u_int8_t ni_rssi; /* recv ssi */
/* header */
u_int8_t ni_macaddr[IEEE80211_ADDR_LEN];
u_int8_t ni_bssid[IEEE80211_ADDR_LEN];
/* beacon, probe response */
u_int8_t ni_tstamp[8]; /* from last rcv'd beacon */
u_int16_t ni_intval; /* beacon interval */
u_int16_t ni_capinfo; /* capabilities */
u_int8_t ni_esslen;
u_int8_t ni_essid[IEEE80211_NWID_LEN];
struct ieee80211_rateset ni_rates; /* negotiated rate set */
u_int8_t *ni_country; /* country information XXX */
struct ieee80211_channel *ni_chan;
u_int8_t ni_erp; /* 11g only */
/* DTIM and contention free period (CFP) */
u_int8_t ni_dtimcount;
u_int8_t ni_dtimperiod;
#ifdef notyet
u_int8_t ni_cfpperiod; /* # of DTIMs between CFPs */
u_int16_t ni_cfpduremain; /* remaining cfp duration */
u_int16_t ni_cfpmaxduration;/* max CFP duration in TU */
u_int16_t ni_nextdtim; /* time to next DTIM */
u_int16_t ni_timoffset;
#endif
/* power saving mode */
u_int8_t ni_pwrsave;
struct mbuf_queue ni_savedq; /* packets queued for pspoll */
/* RSN */
struct timeout ni_eapol_to;
u_int ni_rsn_state;
u_int ni_rsn_supp_state;
u_int ni_rsn_gstate;
u_int ni_rsn_retries;
u_int ni_supported_rsnprotos;
u_int ni_rsnprotos;
u_int ni_supported_rsnakms;
u_int ni_rsnakms;
u_int ni_rsnciphers;
enum ieee80211_cipher ni_rsngroupcipher;
enum ieee80211_cipher ni_rsngroupmgmtcipher;
u_int16_t ni_rsncaps;
enum ieee80211_cipher ni_rsncipher;
u_int8_t ni_nonce[EAPOL_KEY_NONCE_LEN];
u_int8_t ni_pmk[IEEE80211_PMK_LEN];
u_int8_t ni_pmkid[IEEE80211_PMKID_LEN];
u_int64_t ni_replaycnt;
u_int8_t ni_replaycnt_ok;
u_int64_t ni_reqreplaycnt;
u_int8_t ni_reqreplaycnt_ok;
u_int8_t *ni_rsnie;
struct ieee80211_key ni_pairwise_key;
struct ieee80211_ptk ni_ptk;
u_int8_t ni_key_count;
int ni_port_valid;
/* SA Query */
u_int16_t ni_sa_query_trid;
struct timeout ni_sa_query_to;
int ni_sa_query_count;
/* HT capabilities */
uint16_t ni_htcaps;
uint8_t ni_ampdu_param;
uint8_t ni_rxmcs[howmany(80,NBBY)];
uint16_t ni_max_rxrate; /* in Mb/s, 0 <= rate <= 1023 */
uint8_t ni_tx_mcs_set;
uint16_t ni_htxcaps;
uint32_t ni_txbfcaps;
uint8_t ni_aselcaps;
/* HT operation */
uint8_t ni_primary_chan; /* XXX corresponds to ni_chan */
uint8_t ni_htop0;
uint16_t ni_htop1;
uint16_t ni_htop2;
uint8_t ni_basic_mcs[howmany(128,NBBY)];
/* VHT capabilities */
uint32_t ni_vhtcaps;
uint16_t ni_vht_rxmcs;
uint16_t ni_vht_rx_max_lgi_mbit_s;
uint16_t ni_vht_txmcs;
uint16_t ni_vht_tx_max_lgi_mbit_s;
/* VHT operation */
uint8_t ni_vht_chan_width;
uint8_t ni_vht_chan_center_freq_idx0;
uint8_t ni_vht_chan_center_freq_idx1;
uint16_t ni_vht_basic_mcs;
/* Timeout handlers which trigger Tx Block Ack negotiation. */
struct timeout ni_addba_req_to[IEEE80211_NUM_TID];
int ni_addba_req_intval[IEEE80211_NUM_TID];
#define IEEE80211_ADDBA_REQ_INTVAL_MAX 30 /* in seconds */
/* Block Ack records */
struct ieee80211_tx_ba ni_tx_ba[IEEE80211_NUM_TID];
struct ieee80211_rx_ba ni_rx_ba[IEEE80211_NUM_TID];
int ni_txmcs; /* current MCS used for TX */
int ni_vht_ss; /* VHT # spatial streams */
/* others */
u_int16_t ni_associd; /* assoc response */
u_int16_t ni_txseq; /* seq to be transmitted */
u_int16_t ni_rxseq; /* seq previous received */
u_int16_t ni_qos_txseqs[IEEE80211_NUM_TID];
u_int16_t ni_qos_rxseqs[IEEE80211_NUM_TID];
int ni_fails; /* failure count to associate */
uint32_t ni_assoc_fail; /* assoc failure reasons */
#define IEEE80211_NODE_ASSOCFAIL_CHAN 0x01
#define IEEE80211_NODE_ASSOCFAIL_IBSS 0x02
#define IEEE80211_NODE_ASSOCFAIL_PRIVACY 0x04
#define IEEE80211_NODE_ASSOCFAIL_BASIC_RATE 0x08
#define IEEE80211_NODE_ASSOCFAIL_ESSID 0x10
#define IEEE80211_NODE_ASSOCFAIL_BSSID 0x20
#define IEEE80211_NODE_ASSOCFAIL_WPA_PROTO 0x40
#define IEEE80211_NODE_ASSOCFAIL_WPA_KEY 0x80
int ni_inact; /* inactivity mark count */
int ni_txrate; /* index to ni_rates[] */
int ni_state;
u_int32_t ni_flags; /* special-purpose state */
#define IEEE80211_NODE_ERP 0x0001
#define IEEE80211_NODE_QOS 0x0002
#define IEEE80211_NODE_REKEY 0x0004 /* GTK rekeying in progress */
#define IEEE80211_NODE_RXPROT 0x0008 /* RX protection ON */
#define IEEE80211_NODE_TXPROT 0x0010 /* TX protection ON */
#define IEEE80211_NODE_TXRXPROT \
(IEEE80211_NODE_TXPROT | IEEE80211_NODE_RXPROT)
#define IEEE80211_NODE_RXMGMTPROT 0x0020 /* RX MMPDU protection ON */
#define IEEE80211_NODE_TXMGMTPROT 0x0040 /* TX MMPDU protection ON */
#define IEEE80211_NODE_MFP 0x0080 /* MFP negotiated */
#define IEEE80211_NODE_PMK 0x0100 /* ni_pmk set */
#define IEEE80211_NODE_PMKID 0x0200 /* ni_pmkid set */
#define IEEE80211_NODE_HT 0x0400 /* HT negotiated */
#define IEEE80211_NODE_SA_QUERY 0x0800 /* SA Query in progress */
#define IEEE80211_NODE_SA_QUERY_FAILED 0x1000 /* last SA Query failed */
#define IEEE80211_NODE_RSN_NEW_PTK 0x2000 /* expecting a new PTK */
#define IEEE80211_NODE_HT_SGI20 0x4000 /* SGI on 20 MHz negotiated */
#define IEEE80211_NODE_HT_SGI40 0x8000 /* SGI on 40 MHz negotiated */
#define IEEE80211_NODE_VHT 0x10000 /* VHT negotiated */
#define IEEE80211_NODE_HTCAP 0x20000 /* claims to support HT */
#define IEEE80211_NODE_VHTCAP 0x40000 /* claims to support VHT */
#define IEEE80211_NODE_VHT_SGI80 0x80000 /* SGI on 80 MHz negotiated */
#define IEEE80211_NODE_VHT_SGI160 0x100000 /* SGI on 160 MHz negotiated */
/* If not NULL, this function gets called when ni_refcnt hits zero. */
void (*ni_unref_cb)(struct ieee80211com *,
struct ieee80211_node *);
void * ni_unref_arg;
size_t ni_unref_arg_size;
};
RBT_HEAD(ieee80211_tree, ieee80211_node);
struct ieee80211_ess_rbt {
RBT_ENTRY(ieee80211_ess_rbt) ess_rbt;
u_int8_t esslen;
u_int8_t essid[IEEE80211_NWID_LEN];
struct ieee80211_node *ni2;
struct ieee80211_node *ni5;
struct ieee80211_node *ni;
};
RBT_HEAD(ieee80211_ess_tree, ieee80211_ess_rbt);
static inline void
ieee80211_node_incref(struct ieee80211_node *ni)
{
int s;
s = splnet();
ni->ni_refcnt++;
splx(s);
}
static inline u_int
ieee80211_node_decref(struct ieee80211_node *ni)
{
u_int refcnt;
int s;
s = splnet();
refcnt = --ni->ni_refcnt;
splx(s);
return refcnt;
}
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 */
}
/*
* Check if the peer supports HT.
* Require a HT capabilities IE and at least one of the mandatory MCS.
* MCS 0-7 are mandatory but some APs have particular MCS disabled.
*/
static inline int
ieee80211_node_supports_ht(struct ieee80211_node *ni)
{
return ((ni->ni_flags & IEEE80211_NODE_HTCAP) &&
ni->ni_rxmcs[0] & 0xff);
}
/* Check if the peer supports HT short guard interval (SGI) on 20 MHz. */
static inline int
ieee80211_node_supports_ht_sgi20(struct ieee80211_node *ni)
{
return ieee80211_node_supports_ht(ni) &&
(ni->ni_htcaps & IEEE80211_HTCAP_SGI20);
}
/* Check if the peer supports HT short guard interval (SGI) on 40 MHz. */
static inline int
ieee80211_node_supports_ht_sgi40(struct ieee80211_node *ni)
{
return ieee80211_node_supports_ht(ni) &&
(ni->ni_htcaps & IEEE80211_HTCAP_SGI40);
}
/* Check if the peer can receive frames sent on a 40 MHz channel. */
static inline int
ieee80211_node_supports_ht_chan40(struct ieee80211_node *ni)
{
return (ieee80211_node_supports_ht(ni) &&
(ni->ni_htcaps & IEEE80211_HTCAP_CBW20_40) &&
(ni->ni_htop0 & IEEE80211_HTOP0_CHW));
}
/*
* Check if the peer supports VHT.
* Require a VHT capabilities IE and support for VHT MCS with a single
* spatial stream.
*/
static inline int
ieee80211_node_supports_vht(struct ieee80211_node *ni)
{
uint16_t rx_mcs;
rx_mcs = (ni->ni_vht_rxmcs & IEEE80211_VHT_MCS_FOR_SS_MASK(1)) >>
IEEE80211_VHT_MCS_FOR_SS_SHIFT(1);
return ((ni->ni_flags & IEEE80211_NODE_VHTCAP) &&
rx_mcs != IEEE80211_VHT_MCS_SS_NOT_SUPP);
}
/* Check if the peer supports VHT short guard interval (SGI) on 80 MHz. */
static inline int
ieee80211_node_supports_vht_sgi80(struct ieee80211_node *ni)
{
return ieee80211_node_supports_vht(ni) &&
(ni->ni_vhtcaps & IEEE80211_VHTCAP_SGI80);
}
/* Check if the peer supports VHT short guard interval (SGI) on 160 MHz. */
static inline int
ieee80211_node_supports_vht_sgi160(struct ieee80211_node *ni)
{
return ieee80211_node_supports_vht(ni) &&
(ni->ni_vhtcaps & IEEE80211_VHTCAP_SGI160);
}
/* Check if the peer can receive frames sent on an 80 MHz channel. */
static inline int
ieee80211_node_supports_vht_chan80(struct ieee80211_node *ni)
{
uint8_t cap_chan_width, op_chan_width;
if (!ieee80211_node_supports_vht(ni))
return 0;
cap_chan_width = (ni->ni_vhtcaps & IEEE80211_VHTCAP_CHAN_WIDTH_MASK) >>
IEEE80211_VHTCAP_CHAN_WIDTH_SHIFT;
if (cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_80 &&
cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_160 &&
cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_160_8080)
return 0;
op_chan_width = (ni->ni_vht_chan_width &
IEEE80211_VHTOP0_CHAN_WIDTH_MASK) >>
IEEE80211_VHTOP0_CHAN_WIDTH_SHIFT;
return (op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_80 ||
op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_160 ||
op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_8080);
}
/* Check if the peer can receive frames sent on a 160 MHz channel. */
static inline int
ieee80211_node_supports_vht_chan160(struct ieee80211_node *ni)
{
uint8_t cap_chan_width, op_chan_width;
if (!ieee80211_node_supports_vht(ni))
return 0;
cap_chan_width = (ni->ni_vhtcaps & IEEE80211_VHTCAP_CHAN_WIDTH_MASK) >>
IEEE80211_VHTCAP_CHAN_WIDTH_SHIFT;
if (cap_chan_width != IEEE80211_VHTCAP_CHAN_WIDTH_160)
return 0;
op_chan_width = (ni->ni_vht_chan_width &
IEEE80211_VHTOP0_CHAN_WIDTH_MASK) >>
IEEE80211_VHTOP0_CHAN_WIDTH_SHIFT;
return (op_chan_width == IEEE80211_VHTOP0_CHAN_WIDTH_160);
}
struct ieee80211com;
typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
void ieee80211_node_attach(struct ifnet *);
void ieee80211_node_lateattach(struct ifnet *);
void ieee80211_node_detach(struct ifnet *);
void ieee80211_begin_scan(struct ifnet *);
void ieee80211_next_scan(struct ifnet *);
void ieee80211_end_scan(struct ifnet *);
void ieee80211_reset_scan(struct ifnet *);
struct ieee80211_node *ieee80211_alloc_node(struct ieee80211com *,
const u_int8_t *);
struct ieee80211_node *ieee80211_dup_bss(struct ieee80211com *,
const u_int8_t *);
struct ieee80211_node *ieee80211_find_node(struct ieee80211com *,
const u_int8_t *);
void ieee80211_node_tx_ba_clear(struct ieee80211_node *, int);
void ieee80211_ba_del(struct ieee80211_node *);
struct ieee80211_node *ieee80211_find_rxnode(struct ieee80211com *,
const struct ieee80211_frame *);
struct ieee80211_node *ieee80211_find_txnode(struct ieee80211com *,
const u_int8_t *);
void ieee80211_release_node(struct ieee80211com *,
struct ieee80211_node *);
void ieee80211_node_cleanup(struct ieee80211com *, struct ieee80211_node *);
void ieee80211_free_allnodes(struct ieee80211com *, int);
void ieee80211_iterate_nodes(struct ieee80211com *,
ieee80211_iter_func *, void *);
void ieee80211_clean_cached(struct ieee80211com *);
void ieee80211_clean_nodes(struct ieee80211com *, int);
void ieee80211_setup_htcaps(struct ieee80211_node *, const uint8_t *,
uint8_t);
void ieee80211_clear_htcaps(struct ieee80211_node *);
int ieee80211_setup_htop(struct ieee80211_node *, const uint8_t *,
uint8_t, int);
void ieee80211_setup_vhtcaps(struct ieee80211_node *, const uint8_t *,
uint8_t);
void ieee80211_clear_vhtcaps(struct ieee80211_node *);
int ieee80211_setup_vhtop(struct ieee80211_node *, const uint8_t *,
uint8_t, int);
int ieee80211_setup_rates(struct ieee80211com *,
struct ieee80211_node *, const u_int8_t *, const u_int8_t *, int);
void ieee80211_node_trigger_addba_req(struct ieee80211_node *, int);
int ieee80211_iserp_sta(const struct ieee80211_node *);
void ieee80211_count_longslotsta(void *, struct ieee80211_node *);
void ieee80211_count_nonerpsta(void *, struct ieee80211_node *);
void ieee80211_count_pssta(void *, struct ieee80211_node *);
void ieee80211_count_rekeysta(void *, struct ieee80211_node *);
void ieee80211_node_join(struct ieee80211com *,
struct ieee80211_node *, int);
void ieee80211_node_leave(struct ieee80211com *,
struct ieee80211_node *);
int ieee80211_match_bss(struct ieee80211com *, struct ieee80211_node *, int);
void ieee80211_node_tx_stopped(struct ieee80211com *, struct ieee80211_node *);
struct ieee80211_node *ieee80211_node_choose_bss(struct ieee80211com *, int,
struct ieee80211_node **);
void ieee80211_node_join_bss(struct ieee80211com *, struct ieee80211_node *);
void ieee80211_create_ibss(struct ieee80211com* ,
struct ieee80211_channel *);
void ieee80211_notify_dtim(struct ieee80211com *);
void ieee80211_set_tim(struct ieee80211com *, int, int);
void ieee80211_free_node(struct ieee80211com *, struct ieee80211_node *);
int ieee80211_node_cmp(const struct ieee80211_node *,
const struct ieee80211_node *);
int ieee80211_ess_cmp(const struct ieee80211_ess_rbt *,
const struct ieee80211_ess_rbt *);
RBT_PROTOTYPE(ieee80211_tree, ieee80211_node, ni_node, ieee80211_node_cmp);
RBT_PROTOTYPE(ieee80211_ess_tree, ieee80211_ess_rbt, ess_rbt, ieee80211_ess_cmp);
#endif /* _NET80211_IEEE80211_NODE_H_ */
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