ieee80211_var.h

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/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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_VAR_H_
#define _NET80211_IEEE80211_VAR_H_
 
/*
 * Definitions for IEEE 802.11 drivers.
 */
/* NB: portability glue must go first */
#if defined(__NetBSD__)
#include <net80211/ieee80211_netbsd.h>
#elif defined(__FreeBSD__)
#include <net80211/ieee80211_freebsd.h>
#elif defined(__linux__)
#include <net80211/ieee80211_linux.h>
#else
#error  "No support for your operating system!"
#endif
 
#include <net80211/_ieee80211.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_ageq.h>
#include <net80211/ieee80211_crypto.h>
#include <net80211/ieee80211_dfs.h>
#include <net80211/ieee80211_ioctl.h>           /* for ieee80211_stats */
#include <net80211/ieee80211_phy.h>
#include <net80211/ieee80211_power.h>
#include <net80211/ieee80211_node.h>
#include <net80211/ieee80211_proto.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_scan.h>
 
#define IEEE80211_TXPOWER_MAX   100     /* .5 dBm (XXX units?) */
#define IEEE80211_TXPOWER_MIN   0       /* kill radio */
 
#define IEEE80211_DTIM_DEFAULT  1       /* default DTIM period */
#define IEEE80211_BINTVAL_DEFAULT 100   /* default beacon interval (TU's) */
 
#define IEEE80211_BMISS_MAX     2       /* maximum consecutive bmiss allowed */
#define IEEE80211_HWBMISS_DEFAULT 7     /* h/w bmiss threshold (beacons) */
 
#define IEEE80211_BGSCAN_INTVAL_MIN     15      /* min bg scan intvl (secs) */
#define IEEE80211_BGSCAN_INTVAL_DEFAULT (5*60)  /* default bg scan intvl */
 
#define IEEE80211_BGSCAN_IDLE_MIN       100     /* min idle time (ms) */
#define IEEE80211_BGSCAN_IDLE_DEFAULT   250     /* default idle time (ms) */
 
#define IEEE80211_SCAN_VALID_MIN        10      /* min scan valid time (secs) */
#define IEEE80211_SCAN_VALID_DEFAULT    60      /* default scan valid time */
 
#define IEEE80211_PS_SLEEP      0x1     /* STA is in power saving mode */
#define IEEE80211_PS_MAX_QUEUE  50      /* maximum saved packets */
 
#define IEEE80211_FIXED_RATE_NONE       0xff
#define IEEE80211_TXMAX_DEFAULT         6       /* default ucast max retries */
 
#define IEEE80211_RTS_DEFAULT           IEEE80211_RTS_MAX
#define IEEE80211_FRAG_DEFAULT          IEEE80211_FRAG_MAX
 
#define IEEE80211_MS_TO_TU(x)   (((x) * 1000) / 1024)
#define IEEE80211_TU_TO_MS(x)   (((x) * 1024) / 1000)
/* XXX TODO: cap this at 1, in case hz is not 1000 */
#define IEEE80211_TU_TO_TICKS(x)(((uint64_t)(x) * 1024 * hz) / (1000 * 1000))
 
/*
 * Technically, vhtflags may be 0 /and/ 11ac is enabled.
 * At some point ic should just grow a flag somewhere that
 * says that VHT is supported - and then this macro can be
 * changed.
 */
#define IEEE80211_CONF_VHT(ic)                  \
            ((ic)->ic_flags_ext & IEEE80211_FEXT_VHT)
 
#define IEEE80211_CONF_SEQNO_OFFLOAD(ic)        \
            ((ic)->ic_flags_ext & IEEE80211_FEXT_SEQNO_OFFLOAD)
#define IEEE80211_CONF_FRAG_OFFLOAD(ic) \
            ((ic)->ic_flags_ext & IEEE80211_FEXT_FRAG_OFFLOAD)
 
/*
 * 802.11 control state is split into a common portion that maps
 * 1-1 to a physical device and one or more "Virtual AP's" (VAP)
 * that are bound to an ieee80211com instance and share a single
 * underlying device.  Each VAP has a corresponding OS device
 * entity through which traffic flows and that applications use
 * for issuing ioctls, etc.
 */
 
/*
 * Data common to one or more virtual AP's.  State shared by
 * the underlying device and the net80211 layer is exposed here;
 * e.g. device-specific callbacks.
 */
struct ieee80211vap;
typedef void (*ieee80211vap_attach)(struct ieee80211vap *);
 
struct ieee80211_appie {
        uint16_t                ie_len;         /* size of ie_data */
        uint8_t                 ie_data[];      /* user-specified IE's */
};
 
struct ieee80211_tdma_param;
struct ieee80211_rate_table;
struct ieee80211_tx_ampdu;
struct ieee80211_rx_ampdu;
struct ieee80211_superg;
struct ieee80211_frame;
 
struct net80211dump_methods;
 
struct ieee80211com {
        void                    *ic_softc;      /* driver softc */
        const char              *ic_name;       /* usually device name */
        ieee80211_com_lock_t    ic_comlock;     /* state update lock */
        ieee80211_tx_lock_t     ic_txlock;      /* ic/vap TX lock */
        ieee80211_ff_lock_t     ic_fflock;      /* stageq/ni_tx_superg lock */
        LIST_ENTRY(ieee80211com)   ic_next;     /* on global list */
        TAILQ_HEAD(, ieee80211vap) ic_vaps;     /* list of vap instances */
        int                     ic_headroom;    /* driver tx headroom needs */
        enum ieee80211_phytype  ic_phytype;     /* XXX wrong for multi-mode */
        enum ieee80211_opmode   ic_opmode;      /* operation mode */
        struct callout          ic_inact;       /* inactivity processing */
        struct taskqueue        *ic_tq;         /* deferred state thread */
        struct task             ic_parent_task; /* deferred parent processing */
        struct task             ic_promisc_task;/* deferred promisc update */
        struct task             ic_mcast_task;  /* deferred mcast update */
        struct task             ic_chan_task;   /* deferred channel change */
        struct task             ic_bmiss_task;  /* deferred beacon miss hndlr */
        struct task             ic_chw_task;    /* deferred HT CHW update */
        struct task             ic_restart_task; /* deferred device restart */
 
        counter_u64_t           ic_ierrors;     /* input errors */
        counter_u64_t           ic_oerrors;     /* output errors */
 
        uint32_t                ic_flags;       /* state flags */
        uint32_t                ic_flags_ext;   /* extended state flags */
        uint32_t                ic_flags_ht;    /* HT state flags */
        uint32_t                ic_flags_ven;   /* vendor state flags */
        uint32_t                ic_caps;        /* capabilities */
        uint32_t                ic_htcaps;      /* HT capabilities */
        uint32_t                ic_htextcaps;   /* HT extended capabilities */
        uint32_t                ic_cryptocaps;  /* crypto capabilities */
                                                /* set of mode capabilities */
        uint8_t                 ic_modecaps[IEEE80211_MODE_BYTES];
        uint8_t                 ic_promisc;     /* vap's needing promisc mode */
        uint8_t                 ic_allmulti;    /* vap's needing all multicast*/
        uint8_t                 ic_nrunning;    /* vap's marked running */
        uint8_t                 ic_curmode;     /* current mode */
        uint8_t                 ic_macaddr[IEEE80211_ADDR_LEN];
        uint16_t                ic_bintval;     /* beacon interval */
        uint16_t                ic_lintval;     /* listen interval */
        uint16_t                ic_holdover;    /* PM hold over duration */
        uint16_t                ic_txpowlimit;  /* global tx power limit */
        struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
        struct ieee80211_htrateset ic_sup_htrates;
 
        /*
         * Channel state:
         *
         * ic_channels is the set of available channels for the device;
         *    it is setup by the driver
         * ic_nchans is the number of valid entries in ic_channels
         * ic_chan_avail is a bit vector of these channels used to check
         *    whether a channel is available w/o searching the channel table.
         * ic_chan_active is a (potentially) constrained subset of
         *    ic_chan_avail that reflects any mode setting or user-specified
         *    limit on the set of channels to use/scan
         * ic_curchan is the current channel the device is set to; it may
         *    be different from ic_bsschan when we are off-channel scanning
         *    or otherwise doing background work
         * ic_bsschan is the channel selected for operation; it may
         *    be undefined (IEEE80211_CHAN_ANYC)
         * ic_prevchan is a cached ``previous channel'' used to optimize
         *    lookups when switching back+forth between two channels
         *    (e.g. for dynamic turbo)
         */
        int                     ic_nchans;      /* # entries in ic_channels */
        struct ieee80211_channel ic_channels[IEEE80211_CHAN_MAX];
        uint8_t                 ic_chan_avail[IEEE80211_CHAN_BYTES];
        uint8_t                 ic_chan_active[IEEE80211_CHAN_BYTES];
        uint8_t                 ic_chan_scan[IEEE80211_CHAN_BYTES];
        struct ieee80211_channel *ic_curchan;   /* current channel */
        const struct ieee80211_rate_table *ic_rt; /* table for ic_curchan */
        struct ieee80211_channel *ic_bsschan;   /* bss channel */
        struct ieee80211_channel *ic_prevchan;  /* previous channel */
        struct ieee80211_regdomain ic_regdomain;/* regulatory data */
        struct ieee80211_appie  *ic_countryie;  /* calculated country ie */
        struct ieee80211_channel *ic_countryie_chan;
 
        /* 802.11h/DFS state */
        struct ieee80211_channel *ic_csa_newchan;/* channel for doing CSA */
        short                   ic_csa_mode;    /* mode for doing CSA */
        short                   ic_csa_count;   /* count for doing CSA */
        struct ieee80211_dfs_state ic_dfs;      /* DFS state */
 
        struct ieee80211_scan_state *ic_scan;   /* scan state */
        struct ieee80211_scan_methods *ic_scan_methods; /* scan methods */
        int                     ic_lastdata;    /* time of last data frame */
        int                     ic_lastscan;    /* time last scan completed */
 
        /* NB: this is the union of all vap stations/neighbors */
        int                     ic_max_keyix;   /* max h/w key index */
        struct ieee80211_node_table ic_sta;     /* stations/neighbors */
        struct ieee80211_ageq   ic_stageq;      /* frame staging queue */
        uint32_t                ic_hash_key;    /* random key for mac hash */
 
        /* XXX multi-bss: split out common/vap parts */
        struct ieee80211_wme_state ic_wme;      /* WME/WMM state */
 
        /* Protection mode for net80211 driven channel NICs */
        enum ieee80211_protmode ic_protmode;    /* 802.11g protection mode */
        enum ieee80211_protmode ic_htprotmode;  /* HT protection mode */
        uint8_t                 ic_curhtprotmode;/* HTINFO bss state */
 
        uint8_t                 ic_rxstream;    /* # RX streams */
        uint8_t                 ic_txstream;    /* # TX streams */
 
        /* VHT information */
        uint32_t                ic_vhtcaps;     /* VHT capabilities */
        uint32_t                ic_vhtextcaps;  /* VHT extended capabilities (TODO) */
        struct ieee80211_vht_mcs_info   ic_vht_mcsinfo; /* Support TX/RX VHT MCS */
        uint32_t                ic_flags_vht;   /* VHT state flags */
        uint32_t                ic_vht_spare[3];
 
        /* optional state for Atheros SuperG protocol extensions */
        struct ieee80211_superg *ic_superg;
 
        /* radiotap handling */
        struct ieee80211_radiotap_header *ic_th;/* tx radiotap headers */
        void                    *ic_txchan;     /* channel state in ic_th */
        struct ieee80211_radiotap_header *ic_rh;/* rx radiotap headers */
        void                    *ic_rxchan;     /* channel state in ic_rh */
        int                     ic_montaps;     /* active monitor mode taps */
 
        /* virtual ap create/delete */
        struct ieee80211vap*    (*ic_vap_create)(struct ieee80211com *,
                                    const char [IFNAMSIZ], int,
                                    enum ieee80211_opmode, int,
                                    const uint8_t [IEEE80211_ADDR_LEN],
                                    const uint8_t [IEEE80211_ADDR_LEN]);
        void                    (*ic_vap_delete)(struct ieee80211vap *);
        /* device specific ioctls */
        int                     (*ic_ioctl)(struct ieee80211com *,
                                    u_long, void *);
        /* start/stop device */
        void                    (*ic_parent)(struct ieee80211com *);
        /* operating mode attachment */
        ieee80211vap_attach     ic_vattach[IEEE80211_OPMODE_MAX];
        /* return hardware/radio capabilities */
        void                    (*ic_getradiocaps)(struct ieee80211com *,
                                    int, int *, struct ieee80211_channel []);
        /* check and/or prepare regdomain state change */
        int                     (*ic_setregdomain)(struct ieee80211com *,
                                    struct ieee80211_regdomain *,
                                    int, struct ieee80211_channel []);
 
        int                     (*ic_set_quiet)(struct ieee80211_node *,
                                    u_int8_t *quiet_elm);
 
        /* regular transmit */
        int                     (*ic_transmit)(struct ieee80211com *,
                                    struct mbuf *);
        /* send/recv 802.11 management frame */
        int                     (*ic_send_mgmt)(struct ieee80211_node *,
                                     int, int);
        /* send raw 802.11 frame */
        int                     (*ic_raw_xmit)(struct ieee80211_node *,
                                    struct mbuf *,
                                    const struct ieee80211_bpf_params *);
        /* update device state for 802.11 slot time change */
        void                    (*ic_updateslot)(struct ieee80211com *);
        /* handle multicast state changes */
        void                    (*ic_update_mcast)(struct ieee80211com *);
        /* handle promiscuous mode changes */
        void                    (*ic_update_promisc)(struct ieee80211com *);
        /* new station association callback/notification */
        void                    (*ic_newassoc)(struct ieee80211_node *, int);
        /* TDMA update notification */
        void                    (*ic_tdma_update)(struct ieee80211_node *,
                                    const struct ieee80211_tdma_param *, int);
 
        /* Node state management */
 
        /* Allocate a new node */
        struct ieee80211_node*  (*ic_node_alloc)(struct ieee80211vap *,
                                    const uint8_t [IEEE80211_ADDR_LEN]);
 
        /* Driver node initialisation after net80211 setup */
        int                     (*ic_node_init)(struct ieee80211_node *);
 
        /* Driver node deallocation */
        void                    (*ic_node_free)(struct ieee80211_node *);
 
        /* Driver node state cleanup before deallocation */
        void                    (*ic_node_cleanup)(struct ieee80211_node *);
 
        void                    (*ic_node_age)(struct ieee80211_node *);
        void                    (*ic_node_drain)(struct ieee80211_node *);
        int8_t                  (*ic_node_getrssi)(const struct ieee80211_node*);
        void                    (*ic_node_getsignal)(const struct ieee80211_node*,
                                    int8_t *, int8_t *);
        void                    (*ic_node_getmimoinfo)(
                                    const struct ieee80211_node*,
                                    struct ieee80211_mimo_info *);
        /* scanning support */
        void                    (*ic_scan_start)(struct ieee80211com *);
        void                    (*ic_scan_end)(struct ieee80211com *);
        void                    (*ic_set_channel)(struct ieee80211com *);
        void                    (*ic_scan_curchan)(struct ieee80211_scan_state *,
                                    unsigned long);
        void                    (*ic_scan_mindwell)(struct ieee80211_scan_state *);
 
        /*
         * 802.11n ADDBA support.  A simple/generic implementation
         * of A-MPDU tx aggregation is provided; the driver may
         * override these methods to provide their own support.
         * A-MPDU rx re-ordering happens automatically if the
         * driver passes out-of-order frames to ieee80211_input
         * from an assocated HT station.
         */
        int                     (*ic_recv_action)(struct ieee80211_node *,
                                    const struct ieee80211_frame *,
                                    const uint8_t *frm, const uint8_t *efrm);
        int                     (*ic_send_action)(struct ieee80211_node *,
                                    int category, int action, void *);
        /* check if A-MPDU should be enabled this station+ac */
        int                     (*ic_ampdu_enable)(struct ieee80211_node *,
                                    struct ieee80211_tx_ampdu *);
        /* start/stop doing A-MPDU tx aggregation for a station */
        int                     (*ic_addba_request)(struct ieee80211_node *,
                                    struct ieee80211_tx_ampdu *,
                                    int dialogtoken, int baparamset,
                                    int batimeout);
        int                     (*ic_addba_response)(struct ieee80211_node *,
                                    struct ieee80211_tx_ampdu *,
                                    int status, int baparamset, int batimeout);
        void                    (*ic_addba_stop)(struct ieee80211_node *,
                                    struct ieee80211_tx_ampdu *);
        void                    (*ic_addba_response_timeout)(struct ieee80211_node *,
                                    struct ieee80211_tx_ampdu *);
        /* BAR response received */
        void                    (*ic_bar_response)(struct ieee80211_node *,
                                    struct ieee80211_tx_ampdu *, int status);
        /* start/stop doing A-MPDU rx processing for a station */
        int                     (*ic_ampdu_rx_start)(struct ieee80211_node *,
                                    struct ieee80211_rx_ampdu *, int baparamset,
                                    int batimeout, int baseqctl);
        void                    (*ic_ampdu_rx_stop)(struct ieee80211_node *,
                                    struct ieee80211_rx_ampdu *);
 
        /* The channel width has changed (20<->2040) */
        void                    (*ic_update_chw)(struct ieee80211com *);
 
        const struct debugnet80211_methods      *ic_debugnet_meth;
        uint64_t                ic_spare[7];
};
 
struct ieee80211_aclator;
struct ieee80211_tdma_state;
struct ieee80211_mesh_state;
struct ieee80211_hwmp_state;
struct ieee80211_rx_histogram;
struct ieee80211_tx_histogram;
 
struct ieee80211vap {
        struct ifmedia          iv_media;       /* interface media config */
        struct ifnet            *iv_ifp;        /* associated device */
        struct bpf_if           *iv_rawbpf;     /* packet filter structure */
        struct sysctl_ctx_list  *iv_sysctl;     /* dynamic sysctl context */
        struct sysctl_oid       *iv_oid;        /* net.wlan.X sysctl oid */
 
        TAILQ_ENTRY(ieee80211vap) iv_next;      /* list of vap instances */
        struct ieee80211com     *iv_ic;         /* back ptr to common state */
        /* MAC address: ifp or ic */
        uint8_t                 iv_myaddr[IEEE80211_ADDR_LEN];
        uint32_t                iv_debug;       /* debug msg flags */
        struct ieee80211_stats  iv_stats;       /* statistics */
 
        uint32_t                iv_flags;       /* state flags */
        uint32_t                iv_flags_ext;   /* extended state flags */
        uint32_t                iv_flags_ht;    /* HT state flags */
        uint32_t                iv_flags_ven;   /* vendor state flags */
        uint32_t                iv_ifflags;     /* ifnet flags */
        uint32_t                iv_caps;        /* capabilities */
        uint32_t                iv_htcaps;      /* HT capabilities */
        uint32_t                iv_htextcaps;   /* HT extended capabilities */
        uint32_t                iv_com_state;   /* com usage / detached flag */
        enum ieee80211_opmode   iv_opmode;      /* operation mode */
        enum ieee80211_state    iv_state;       /* state machine state */
        enum ieee80211_state    iv_nstate;      /* pending state */
        int                     iv_nstate_arg;  /* pending state arg */
        struct task             iv_nstate_task; /* deferred state processing */
        struct task             iv_swbmiss_task;/* deferred iv_bmiss call */
        struct callout          iv_mgtsend;     /* mgmt frame response timer */
                                                /* inactivity timer settings */
        int                     iv_inact_init;  /* setting for new station */
        int                     iv_inact_auth;  /* auth but not assoc setting */
        int                     iv_inact_run;   /* authorized setting */
        int                     iv_inact_probe; /* inactive probe time */
 
        /* VHT flags */
        uint32_t                iv_flags_vht;   /* VHT state flags */
        uint32_t                iv_vhtcaps;     /* VHT capabilities */
        uint32_t                iv_vhtextcaps;  /* VHT extended capabilities (TODO) */
        struct ieee80211_vht_mcs_info   iv_vht_mcsinfo;
        uint32_t                iv_vht_spare[4];
 
        int                     iv_des_nssid;   /* # desired ssids */
        struct ieee80211_scan_ssid iv_des_ssid[1];/* desired ssid table */
        uint8_t                 iv_des_bssid[IEEE80211_ADDR_LEN];
        struct ieee80211_channel *iv_des_chan;  /* desired channel */
        uint16_t                iv_des_mode;    /* desired mode */
        int                     iv_nicknamelen; /* XXX junk */
        uint8_t                 iv_nickname[IEEE80211_NWID_LEN];
        u_int                   iv_bgscanidle;  /* bg scan idle threshold */
        u_int                   iv_bgscanintvl; /* bg scan min interval */
        u_int                   iv_scanvalid;   /* scan cache valid threshold */
        u_int                   iv_scanreq_duration;
        u_int                   iv_scanreq_mindwell;
        u_int                   iv_scanreq_maxdwell;
        uint16_t                iv_scanreq_flags;/* held scan request params */
        uint8_t                 iv_scanreq_nssid;
        struct ieee80211_scan_ssid iv_scanreq_ssid[IEEE80211_SCAN_MAX_SSID];
        /* sta-mode roaming state */
        enum ieee80211_roamingmode iv_roaming;  /* roaming mode */
        struct ieee80211_roamparam iv_roamparms[IEEE80211_MODE_MAX];
 
        uint8_t                 iv_bmissthreshold;
        uint8_t                 iv_bmiss_count; /* current beacon miss count */
        int                     iv_bmiss_max;   /* max bmiss before scan */
        uint16_t                iv_swbmiss_count;/* beacons in last period */
        uint16_t                iv_swbmiss_period;/* s/w bmiss period */
        struct callout          iv_swbmiss;     /* s/w beacon miss timer */
 
        int                     iv_ampdu_rxmax; /* A-MPDU rx limit (bytes) */
        int                     iv_ampdu_density;/* A-MPDU density */
        int                     iv_ampdu_limit; /* A-MPDU tx limit (bytes) */
        int                     iv_amsdu_limit; /* A-MSDU tx limit (bytes) */
        u_int                   iv_ampdu_mintraffic[WME_NUM_AC];
 
        struct ieee80211_beacon_offsets iv_bcn_off;
        uint32_t                *iv_aid_bitmap; /* association id map */
        uint16_t                iv_max_aid;
        uint16_t                iv_sta_assoc;   /* stations associated */
        uint16_t                iv_ps_sta;      /* stations in power save */
        uint16_t                iv_ps_pending;  /* ps sta's w/ pending frames */
        uint16_t                iv_txseq;       /* mcast xmit seq# space */
        uint16_t                iv_tim_len;     /* ic_tim_bitmap size (bytes) */
        uint8_t                 *iv_tim_bitmap; /* power-save stations w/ data*/
        uint8_t                 iv_dtim_period; /* DTIM period */
        uint8_t                 iv_dtim_count;  /* DTIM count from last bcn */
                                                /* set/unset aid pwrsav state */
        uint8_t                 iv_quiet;       /* Quiet Element */
        uint8_t                 iv_quiet_count; /* constant count for Quiet Element */
        uint8_t                 iv_quiet_count_value;   /* variable count for Quiet Element */
        uint8_t                 iv_quiet_period;        /* period for Quiet Element */
        uint16_t                iv_quiet_duration;      /* duration for Quiet Element */
        uint16_t                iv_quiet_offset;        /* offset for Quiet Element */
        int                     iv_csa_count;   /* count for doing CSA */
 
        struct ieee80211_node   *iv_bss;        /* information for this node */
        struct ieee80211_txparam iv_txparms[IEEE80211_MODE_MAX];
        uint16_t                iv_rtsthreshold;
        uint16_t                iv_fragthreshold;
        int                     iv_inact_timer; /* inactivity timer wait */
        /* application-specified IE's to attach to mgt frames */
        struct ieee80211_appie  *iv_appie_beacon;
        struct ieee80211_appie  *iv_appie_probereq;
        struct ieee80211_appie  *iv_appie_proberesp;
        struct ieee80211_appie  *iv_appie_assocreq;
        struct ieee80211_appie  *iv_appie_assocresp;
        struct ieee80211_appie  *iv_appie_wpa;
        uint8_t                 *iv_wpa_ie;
        uint8_t                 *iv_rsn_ie;
 
        /* Key management */
        uint16_t                iv_max_keyix;   /* max h/w key index */
        ieee80211_keyix         iv_def_txkey;   /* default/group tx key index */
        struct ieee80211_key    iv_nw_keys[IEEE80211_WEP_NKID];
        int                     (*iv_key_alloc)(struct ieee80211vap *,
                                    struct ieee80211_key *,
                                    ieee80211_keyix *, ieee80211_keyix *);
        int                     (*iv_key_delete)(struct ieee80211vap *, 
                                    const struct ieee80211_key *);
        int                     (*iv_key_set)(struct ieee80211vap *,
                                    const struct ieee80211_key *);
        void                    (*iv_key_update_begin)(struct ieee80211vap *);
        void                    (*iv_key_update_end)(struct ieee80211vap *);
        void                    (*iv_update_deftxkey)(struct ieee80211vap *,
                                    ieee80211_keyix deftxkey);
 
        const struct ieee80211_authenticator *iv_auth; /* authenticator glue */
        void                    *iv_ec;         /* private auth state */
 
        const struct ieee80211_aclator *iv_acl; /* acl glue */
        void                    *iv_as;         /* private aclator state */
 
        const struct ieee80211_ratectl *iv_rate;
        void                    *iv_rs;         /* private ratectl state */
 
        struct ieee80211_tdma_state *iv_tdma;   /* tdma state */
        struct ieee80211_mesh_state *iv_mesh;   /* MBSS state */
        struct ieee80211_hwmp_state *iv_hwmp;   /* HWMP state */
 
        /* operate-mode detach hook */
        void                    (*iv_opdetach)(struct ieee80211vap *);
        /* receive processing */
        int                     (*iv_input)(struct ieee80211_node *,
                                    struct mbuf *,
                                    const struct ieee80211_rx_stats *,
                                    int, int);
        void                    (*iv_recv_mgmt)(struct ieee80211_node *,
                                    struct mbuf *, int,
                                    const struct ieee80211_rx_stats *,
                                    int, int);
        void                    (*iv_recv_ctl)(struct ieee80211_node *,
                                    struct mbuf *, int);
        void                    (*iv_deliver_data)(struct ieee80211vap *,
                                    struct ieee80211_node *, struct mbuf *);
#if 0
        /* send processing */
        int                     (*iv_send_mgmt)(struct ieee80211_node *,
                                     int, int);
#endif
        /* beacon miss processing */
        void                    (*iv_bmiss)(struct ieee80211vap *);
        /* reset device state after 802.11 parameter/state change */
        int                     (*iv_reset)(struct ieee80211vap *, u_long);
        /* [schedule] beacon frame update */
        void                    (*iv_update_beacon)(struct ieee80211vap *, int);
        /* power save handling */
        void                    (*iv_update_ps)(struct ieee80211vap *, int);
        int                     (*iv_set_tim)(struct ieee80211_node *, int);
        void                    (*iv_node_ps)(struct ieee80211_node *, int);
        void                    (*iv_sta_ps)(struct ieee80211vap *, int);
        void                    (*iv_recv_pspoll)(struct ieee80211_node *,
                                    struct mbuf *);
 
        /* state machine processing */
        int                     (*iv_newstate)(struct ieee80211vap *,
                                    enum ieee80211_state, int);
        /* 802.3 output method for raw frame xmit */
        int                     (*iv_output)(struct ifnet *, struct mbuf *,
                                    const struct sockaddr *, struct route *);
 
        int                     (*iv_wme_update)(struct ieee80211vap *,
                                    const struct wmeParams *wme_params);
        struct task             iv_wme_task;    /* deferred VAP WME update */
 
        /* associated state; protection mode */
        enum ieee80211_protmode iv_protmode;    /* 802.11g protection mode */
        enum ieee80211_protmode iv_htprotmode;  /* HT protection mode */
        uint8_t                 iv_curhtprotmode;/* HTINFO bss state */
 
        uint16_t                iv_nonerpsta;   /* # non-ERP stations */
        uint16_t                iv_longslotsta; /* # long slot time stations */
        uint16_t                iv_ht_sta_assoc;/* HT stations associated */
        uint16_t                iv_ht40_sta_assoc;/* HT40 stations associated */
        int                     iv_lastnonerp;  /* last time non-ERP sta noted*/
        int                     iv_lastnonht;   /* last time non-HT sta noted */
 
        /* update device state for 802.11 slot time change */
        void                    (*iv_updateslot)(struct ieee80211vap *);
        struct task             iv_slot_task;   /* deferred slot time update */
 
        struct task             iv_erp_protmode_task;   /* deferred ERP protmode update */
        void                    (*iv_erp_protmode_update)(struct ieee80211vap *);
 
        struct task             iv_preamble_task;       /* deferred short/barker preamble update */
        void                    (*iv_preamble_update)(struct ieee80211vap *);
 
        struct task             iv_ht_protmode_task;    /* deferred HT protmode update */
        void                    (*iv_ht_protmode_update)(struct ieee80211vap *);
 
        /* per-vap U-APSD state */
        uint8_t                 iv_uapsdinfo;   /* sta mode QoS Info flags */
 
        /* Optional transmit/receive histogram statistics */
        struct ieee80211_rx_histogram   *rx_histogram;
        struct ieee80211_tx_histogram   *tx_histogram;
 
        uint64_t                iv_spare[6];
};
MALLOC_DECLARE(M_80211_VAP);
 
#define IEEE80211_ADDR_EQ(a1,a2)        (memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
#define IEEE80211_ADDR_COPY(dst,src)    memcpy(dst,src,IEEE80211_ADDR_LEN)
 
/* ic_flags/iv_flags */
#define IEEE80211_F_TURBOP      0x00000001      /* CONF: ATH Turbo enabled*/
#define IEEE80211_F_COMP        0x00000002      /* CONF: ATH comp enabled */
#define IEEE80211_F_FF          0x00000004      /* CONF: ATH FF enabled */
#define IEEE80211_F_BURST       0x00000008      /* CONF: bursting enabled */
/* NB: this is intentionally setup to be IEEE80211_CAPINFO_PRIVACY */
#define IEEE80211_F_PRIVACY     0x00000010      /* CONF: privacy enabled */
#define IEEE80211_F_PUREG       0x00000020      /* CONF: 11g w/o 11b sta's */
#define IEEE80211_F_SCAN        0x00000080      /* STATUS: scanning */
/* 0x00000300 reserved */
/* NB: this is intentionally setup to be IEEE80211_CAPINFO_SHORT_SLOTTIME */
#define IEEE80211_F_SHSLOT      0x00000400      /* STATUS: use short slot time*/
#define IEEE80211_F_PMGTON      0x00000800      /* CONF: Power mgmt enable */
#define IEEE80211_F_DESBSSID    0x00001000      /* CONF: des_bssid is set */
#define IEEE80211_F_WME         0x00002000      /* CONF: enable WME use */
#define IEEE80211_F_BGSCAN      0x00004000      /* CONF: bg scan enabled (???)*/
#define IEEE80211_F_SWRETRY     0x00008000      /* CONF: sw tx retry enabled */
/* 0x00030000 reserved */
#define IEEE80211_F_SHPREAMBLE  0x00040000      /* STATUS: use short preamble */
#define IEEE80211_F_DATAPAD     0x00080000      /* CONF: do alignment pad */
#define IEEE80211_F_USEPROT     0x00100000      /* STATUS: protection enabled */
#define IEEE80211_F_USEBARKER   0x00200000      /* STATUS: use barker preamble*/
#define IEEE80211_F_CSAPENDING  0x00400000      /* STATUS: chan switch pending*/
#define IEEE80211_F_WPA1        0x00800000      /* CONF: WPA enabled */
#define IEEE80211_F_WPA2        0x01000000      /* CONF: WPA2 enabled */
#define IEEE80211_F_WPA         0x01800000      /* CONF: WPA/WPA2 enabled */
#define IEEE80211_F_DROPUNENC   0x02000000      /* CONF: drop unencrypted */
#define IEEE80211_F_COUNTERM    0x04000000      /* CONF: TKIP countermeasures */
#define IEEE80211_F_HIDESSID    0x08000000      /* CONF: hide SSID in beacon */
#define IEEE80211_F_NOBRIDGE    0x10000000      /* CONF: dis. internal bridge */
#define IEEE80211_F_PCF         0x20000000      /* CONF: PCF enabled */
#define IEEE80211_F_DOTH        0x40000000      /* CONF: 11h enabled */
#define IEEE80211_F_DWDS        0x80000000      /* CONF: Dynamic WDS enabled */
 
#define IEEE80211_F_BITS \
        "\20\1TURBOP\2COMP\3FF\4BURST\5PRIVACY\6PUREG\10SCAN" \
        "\13SHSLOT\14PMGTON\15DESBSSID\16WME\17BGSCAN\20SWRETRY" \
        "\23SHPREAMBLE\24DATAPAD\25USEPROT\26USERBARKER\27CSAPENDING" \
        "\30WPA1\31WPA2\32DROPUNENC\33COUNTERM\34HIDESSID\35NOBRIDG\36PCF" \
        "\37DOTH\40DWDS"
 
/* Atheros protocol-specific flags */
#define IEEE80211_F_ATHEROS \
        (IEEE80211_F_FF | IEEE80211_F_COMP | IEEE80211_F_TURBOP)
/* Check if an Atheros capability was negotiated for use */
#define IEEE80211_ATH_CAP(vap, ni, bit) \
        ((vap)->iv_flags & (ni)->ni_ath_flags & (bit))
 
/* ic_flags_ext/iv_flags_ext */
#define IEEE80211_FEXT_INACT     0x00000002     /* CONF: sta inact handling */
#define IEEE80211_FEXT_SCANWAIT  0x00000004     /* STATUS: awaiting scan */
/* 0x00000006 reserved */
#define IEEE80211_FEXT_BGSCAN    0x00000008     /* STATUS: complete bgscan */
#define IEEE80211_FEXT_WPS       0x00000010     /* CONF: WPS enabled */
#define IEEE80211_FEXT_TSN       0x00000020     /* CONF: TSN enabled */
#define IEEE80211_FEXT_SCANREQ   0x00000040     /* STATUS: scan req params */
#define IEEE80211_FEXT_RESUME    0x00000080     /* STATUS: start on resume */
#define IEEE80211_FEXT_4ADDR     0x00000100     /* CONF: apply 4-addr encap */
#define IEEE80211_FEXT_NONERP_PR 0x00000200     /* STATUS: non-ERP sta present*/
#define IEEE80211_FEXT_SWBMISS   0x00000400     /* CONF: do bmiss in s/w */
#define IEEE80211_FEXT_DFS       0x00000800     /* CONF: DFS enabled */
#define IEEE80211_FEXT_DOTD      0x00001000     /* CONF: 11d enabled */
#define IEEE80211_FEXT_STATEWAIT 0x00002000     /* STATUS: awaiting state chg */
#define IEEE80211_FEXT_REINIT    0x00004000     /* STATUS: INIT state first */
#define IEEE80211_FEXT_BPF       0x00008000     /* STATUS: BPF tap present */
/* NB: immutable: should be set only when creating a vap */
#define IEEE80211_FEXT_WDSLEGACY 0x00010000     /* CONF: legacy WDS operation */
#define IEEE80211_FEXT_PROBECHAN 0x00020000     /* CONF: probe passive channel*/
#define IEEE80211_FEXT_UNIQMAC   0x00040000     /* CONF: user or computed mac */
#define IEEE80211_FEXT_SCAN_OFFLOAD     0x00080000      /* CONF: scan is fully offloaded */
#define IEEE80211_FEXT_SEQNO_OFFLOAD    0x00100000      /* CONF: driver does seqno insertion/allocation */
#define IEEE80211_FEXT_FRAG_OFFLOAD     0x00200000      /* CONF: hardware does 802.11 fragmentation + assignment */
#define IEEE80211_FEXT_VHT      0x00400000      /* CONF: VHT support */
#define IEEE80211_FEXT_QUIET_IE 0x00800000      /* STATUS: quiet IE in a beacon has been added */
#define IEEE80211_FEXT_UAPSD    0x01000000      /* CONF: enable U-APSD */
 
#define IEEE80211_FEXT_BITS \
        "\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \
        "\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \
        "\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC\24SCAN_OFFLOAD\25SEQNO_OFFLOAD" \
        "\26VHT\27QUIET_IE"
 
/* ic_flags_ht/iv_flags_ht */
#define IEEE80211_FHT_NONHT_PR   0x00000001     /* STATUS: non-HT sta present */
#define IEEE80211_FHT_LDPC_TX    0x00010000     /* CONF: LDPC tx enabled */
#define IEEE80211_FHT_LDPC_RX    0x00020000     /* CONF: LDPC rx enabled */
#define IEEE80211_FHT_GF         0x00040000     /* CONF: Greenfield enabled */
#define IEEE80211_FHT_HT         0x00080000     /* CONF: HT supported */
#define IEEE80211_FHT_AMPDU_TX   0x00100000     /* CONF: A-MPDU tx supported */
#define IEEE80211_FHT_AMPDU_RX   0x00200000     /* CONF: A-MPDU rx supported */
#define IEEE80211_FHT_AMSDU_TX   0x00400000     /* CONF: A-MSDU tx supported */
#define IEEE80211_FHT_AMSDU_RX   0x00800000     /* CONF: A-MSDU rx supported */
#define IEEE80211_FHT_USEHT40    0x01000000     /* CONF: 20/40 use enabled */
#define IEEE80211_FHT_PUREN      0x02000000     /* CONF: 11n w/o legacy sta's */
#define IEEE80211_FHT_SHORTGI20  0x04000000     /* CONF: short GI in HT20 */
#define IEEE80211_FHT_SHORTGI40  0x08000000     /* CONF: short GI in HT40 */
#define IEEE80211_FHT_HTCOMPAT   0x10000000     /* CONF: HT vendor OUI's */
#define IEEE80211_FHT_RIFS       0x20000000     /* CONF: RIFS enabled */
#define IEEE80211_FHT_STBC_TX    0x40000000     /* CONF: STBC tx enabled */
#define IEEE80211_FHT_STBC_RX    0x80000000     /* CONF: STBC rx enabled */
 
#define IEEE80211_FHT_BITS \
        "\20\1NONHT_PR" \
        "\23GF\24HT\25AMPDU_TX\26AMPDU_TX" \
        "\27AMSDU_TX\30AMSDU_RX\31USEHT40\32PUREN\33SHORTGI20\34SHORTGI40" \
        "\35HTCOMPAT\36RIFS\37STBC_TX\40STBC_RX"
 
#define IEEE80211_FVEN_BITS     "\20"
 
#define IEEE80211_FVHT_VHT      0x000000001     /* CONF: VHT supported */
#define IEEE80211_FVHT_USEVHT40 0x000000002     /* CONF: Use VHT40 */
#define IEEE80211_FVHT_USEVHT80 0x000000004     /* CONF: Use VHT80 */
#define IEEE80211_FVHT_USEVHT160        0x000000008     /* CONF: Use VHT160 */
#define IEEE80211_FVHT_USEVHT80P80      0x000000010     /* CONF: Use VHT 80+80 */
#define IEEE80211_FVHT_MASK                                             \
        (IEEE80211_FVHT_VHT | IEEE80211_FVHT_USEVHT40 |                 \
        IEEE80211_FVHT_USEVHT80 | IEEE80211_FVHT_USEVHT160 |            \
        IEEE80211_FVHT_USEVHT80P80)
#define IEEE80211_VFHT_BITS \
        "\20\1VHT\2VHT40\3VHT80\4VHT160\5VHT80P80"
 
#define IEEE80211_COM_DETACHED  0x00000001      /* ieee80211_ifdetach called */
#define IEEE80211_COM_REF_ADD   0x00000002      /* add / remove reference */
#define IEEE80211_COM_REF       0xfffffffe      /* reference counter bits */
#define IEEE80211_COM_REF_S     1
#define IEEE80211_COM_REF_MAX   (IEEE80211_COM_REF >> IEEE80211_COM_REF_S)
 
int     ic_printf(struct ieee80211com *, const char *, ...) __printflike(2, 3);
void    ieee80211_ifattach(struct ieee80211com *);
void    ieee80211_ifdetach(struct ieee80211com *);
int     ieee80211_vap_setup(struct ieee80211com *, struct ieee80211vap *,
                const char name[IFNAMSIZ], int unit,
                enum ieee80211_opmode opmode, int flags,
                const uint8_t bssid[IEEE80211_ADDR_LEN]);
int     ieee80211_vap_attach(struct ieee80211vap *,
                ifm_change_cb_t, ifm_stat_cb_t,
                const uint8_t macaddr[IEEE80211_ADDR_LEN]);
void    ieee80211_vap_detach(struct ieee80211vap *);
const struct ieee80211_rateset *ieee80211_get_suprates(struct ieee80211com *ic,
                const struct ieee80211_channel *);
const struct ieee80211_htrateset *ieee80211_get_suphtrates(
                struct ieee80211com *, const struct ieee80211_channel *);
void    ieee80211_announce(struct ieee80211com *);
void    ieee80211_announce_channels(struct ieee80211com *);
void    ieee80211_drain(struct ieee80211com *);
void    ieee80211_chan_init(struct ieee80211com *);
struct ieee80211com *ieee80211_find_vap(const uint8_t mac[IEEE80211_ADDR_LEN]);
struct ieee80211com *ieee80211_find_com(const char *name);
typedef void ieee80211_com_iter_func(void *, struct ieee80211com *);
void    ieee80211_iterate_coms(ieee80211_com_iter_func *, void *);
int     ieee80211_media_change(struct ifnet *);
void    ieee80211_media_status(struct ifnet *, struct ifmediareq *);
int     ieee80211_ioctl(struct ifnet *, u_long, caddr_t);
int     ieee80211_rate2media(struct ieee80211com *, int,
                enum ieee80211_phymode);
int     ieee80211_media2rate(int);
int     ieee80211_mhz2ieee(u_int, u_int);
int     ieee80211_chan2ieee(struct ieee80211com *,
                const struct ieee80211_channel *);
u_int   ieee80211_ieee2mhz(u_int, u_int);
int     ieee80211_add_channel_cbw(struct ieee80211_channel[], int, int *,
            uint8_t, uint16_t, int8_t, uint32_t, const uint8_t[], int);
int     ieee80211_add_channel(struct ieee80211_channel[], int, int *,
            uint8_t, uint16_t, int8_t, uint32_t, const uint8_t[]);
int     ieee80211_add_channel_ht40(struct ieee80211_channel[], int, int *,
            uint8_t, int8_t, uint32_t);
uint32_t ieee80211_get_channel_center_freq(const struct ieee80211_channel *);
uint32_t ieee80211_get_channel_center_freq1(const struct ieee80211_channel *);
uint32_t ieee80211_get_channel_center_freq2(const struct ieee80211_channel *);
#define NET80211_CBW_FLAG_HT40          0x01
#define NET80211_CBW_FLAG_VHT80         0x02
#define NET80211_CBW_FLAG_VHT160        0x04
#define NET80211_CBW_FLAG_VHT80P80      0x08
int     ieee80211_add_channel_list_2ghz(struct ieee80211_channel[], int, int *,
            const uint8_t[], int, const uint8_t[], int);
int     ieee80211_add_channels_default_2ghz(struct ieee80211_channel[], int,
            int *, const uint8_t[], int);
int     ieee80211_add_channel_list_5ghz(struct ieee80211_channel[], int, int *,
            const uint8_t[], int, const uint8_t[], int);
struct ieee80211_channel *ieee80211_find_channel(struct ieee80211com *,
                int freq, int flags);
struct ieee80211_channel *ieee80211_find_channel_byieee(struct ieee80211com *,
                int ieee, int flags);
struct ieee80211_channel *ieee80211_lookup_channel_rxstatus(struct ieee80211vap *,
                const struct ieee80211_rx_stats *);
int     ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
enum ieee80211_phymode ieee80211_chan2mode(const struct ieee80211_channel *);
uint32_t ieee80211_mac_hash(const struct ieee80211com *,
                const uint8_t addr[IEEE80211_ADDR_LEN]);
char    ieee80211_channel_type_char(const struct ieee80211_channel *c);
 
#define ieee80211_get_current_channel(_ic)      ((_ic)->ic_curchan)
#define ieee80211_get_home_channel(_ic)         ((_ic)->ic_bsschan)
#define ieee80211_get_vap_desired_channel(_iv)  ((_iv)->iv_des_chan)
 
void    ieee80211_radiotap_attach(struct ieee80211com *,
            struct ieee80211_radiotap_header *th, int tlen,
                uint32_t tx_radiotap,
            struct ieee80211_radiotap_header *rh, int rlen,
                uint32_t rx_radiotap);
void    ieee80211_radiotap_attachv(struct ieee80211com *,
            struct ieee80211_radiotap_header *th,
            int tlen, int n_tx_v, uint32_t tx_radiotap,
            struct ieee80211_radiotap_header *rh,
            int rlen, int n_rx_v, uint32_t rx_radiotap);
void    ieee80211_radiotap_detach(struct ieee80211com *);
void    ieee80211_radiotap_vattach(struct ieee80211vap *);
void    ieee80211_radiotap_vdetach(struct ieee80211vap *);
void    ieee80211_radiotap_chan_change(struct ieee80211com *);
void    ieee80211_radiotap_tx(struct ieee80211vap *, struct mbuf *);
void    ieee80211_radiotap_rx(struct ieee80211vap *, struct mbuf *);
void    ieee80211_radiotap_rx_all(struct ieee80211com *, struct mbuf *);
 
static __inline int
ieee80211_radiotap_active(const struct ieee80211com *ic)
{
        return (ic->ic_flags_ext & IEEE80211_FEXT_BPF) != 0;
}
 
static __inline int
ieee80211_radiotap_active_vap(const struct ieee80211vap *vap)
{
        return (vap->iv_flags_ext & IEEE80211_FEXT_BPF) ||
            vap->iv_ic->ic_montaps != 0;
}
 
/*
 * Enqueue a task on the state thread.
 */
static __inline void
ieee80211_runtask(struct ieee80211com *ic, struct task *task)
{
        taskqueue_enqueue(ic->ic_tq, task);
}
 
/*
 * Wait for a queued task to complete.
 */
static __inline void
ieee80211_draintask(struct ieee80211com *ic, struct task *task)
{
        taskqueue_drain(ic->ic_tq, task);
}
 
/* 
 * Key update synchronization methods.  XXX should not be visible.
 */
static __inline void
ieee80211_key_update_begin(struct ieee80211vap *vap)
{
        vap->iv_key_update_begin(vap);
}
static __inline void
ieee80211_key_update_end(struct ieee80211vap *vap)
{
        vap->iv_key_update_end(vap);
}
 
/*
 * XXX these need to be here for IEEE80211_F_DATAPAD
 */
 
/*
 * Return the space occupied by the 802.11 header and any
 * padding required by the driver.  This works for a
 * management or data frame.
 */
static __inline int
ieee80211_hdrspace(struct ieee80211com *ic, const void *data)
{
        int size = ieee80211_hdrsize(data);
        if (ic->ic_flags & IEEE80211_F_DATAPAD)
                size = roundup(size, sizeof(uint32_t));
        return size;
}
 
/*
 * Like ieee80211_hdrspace, but handles any type of frame.
 */
static __inline int
ieee80211_anyhdrspace(struct ieee80211com *ic, const void *data)
{
        int size = ieee80211_anyhdrsize(data);
        if (ic->ic_flags & IEEE80211_F_DATAPAD)
                size = roundup(size, sizeof(uint32_t));
        return size;
}
 
/*
 * Notify a vap that beacon state has been updated.
 */
static __inline void
ieee80211_beacon_notify(struct ieee80211vap *vap, int what)
{
        if (vap->iv_state == IEEE80211_S_RUN)
                vap->iv_update_beacon(vap, what);
}
 
/*
 * Calculate HT channel promotion flags for a channel.
 * XXX belongs in ieee80211_ht.h but needs IEEE80211_FHT_*
 */
static __inline int
ieee80211_htchanflags(const struct ieee80211_channel *c)
{
        return IEEE80211_IS_CHAN_HT40(c) ?
            IEEE80211_FHT_HT | IEEE80211_FHT_USEHT40 :
            IEEE80211_IS_CHAN_HT(c) ?  IEEE80211_FHT_HT : 0;
}
 
/*
 * Calculate VHT channel promotion flags for a channel.
 * XXX belongs in ieee80211_vht.h but needs IEEE80211_FVHT_*
 */
static __inline int
ieee80211_vhtchanflags(const struct ieee80211_channel *c)
{
 
        if (IEEE80211_IS_CHAN_VHT80P80(c))
                return IEEE80211_FVHT_USEVHT80P80;
        if (IEEE80211_IS_CHAN_VHT160(c))
                return IEEE80211_FVHT_USEVHT160;
        if (IEEE80211_IS_CHAN_VHT80(c))
                return IEEE80211_FVHT_USEVHT80;
        if (IEEE80211_IS_CHAN_VHT40(c))
                return IEEE80211_FVHT_USEVHT40;
        if (IEEE80211_IS_CHAN_VHT(c))
                return IEEE80211_FVHT_VHT;
        return (0);
}
 
/*
 * Fetch the current TX power (cap) for the given node.
 *
 * This includes the node and ic/vap TX power limit as needed,
 * but it doesn't take into account any per-rate limit.
 */
static __inline uint16_t
ieee80211_get_node_txpower(struct ieee80211_node *ni)
{
        struct ieee80211com *ic = ni->ni_ic;
        uint16_t txpower;
 
        txpower = ni->ni_txpower;
        txpower = MIN(txpower, ic->ic_txpowlimit);
        if (ic->ic_curchan != NULL) {
                txpower = MIN(txpower, 2 * ic->ic_curchan->ic_maxregpower);
                txpower = MIN(txpower, ic->ic_curchan->ic_maxpower);
        }
 
        return (txpower);
}
 
/*
 * Debugging facilities compiled in when IEEE80211_DEBUG is defined.
 *
 * The intent is that any problem in the net80211 layer can be
 * diagnosed by inspecting the statistics (dumped by the wlanstats
 * program) and/or the msgs generated by net80211.  Messages are
 * broken into functional classes and can be controlled with the
 * wlandebug program.  Certain of these msg groups are for facilities
 * that are no longer part of net80211 (e.g. IEEE80211_MSG_DOT1XSM).
 */
#define IEEE80211_MSG_11N       0x80000000      /* 11n mode debug */
#define IEEE80211_MSG_DEBUG     0x40000000      /* IFF_DEBUG equivalent */
#define IEEE80211_MSG_DUMPPKTS  0x20000000      /* IFF_LINK2 equivalant */
#define IEEE80211_MSG_CRYPTO    0x10000000      /* crypto work */
#define IEEE80211_MSG_INPUT     0x08000000      /* input handling */
#define IEEE80211_MSG_XRATE     0x04000000      /* rate set handling */
#define IEEE80211_MSG_ELEMID    0x02000000      /* element id parsing */
#define IEEE80211_MSG_NODE      0x01000000      /* node handling */
#define IEEE80211_MSG_ASSOC     0x00800000      /* association handling */
#define IEEE80211_MSG_AUTH      0x00400000      /* authentication handling */
#define IEEE80211_MSG_SCAN      0x00200000      /* scanning */
#define IEEE80211_MSG_OUTPUT    0x00100000      /* output handling */
#define IEEE80211_MSG_STATE     0x00080000      /* state machine */
#define IEEE80211_MSG_POWER     0x00040000      /* power save handling */
#define IEEE80211_MSG_HWMP      0x00020000      /* hybrid mesh protocol */
#define IEEE80211_MSG_DOT1XSM   0x00010000      /* 802.1x state machine */
#define IEEE80211_MSG_RADIUS    0x00008000      /* 802.1x radius client */
#define IEEE80211_MSG_RADDUMP   0x00004000      /* dump 802.1x radius packets */
#define IEEE80211_MSG_MESH      0x00002000      /* mesh networking */
#define IEEE80211_MSG_WPA       0x00001000      /* WPA/RSN protocol */
#define IEEE80211_MSG_ACL       0x00000800      /* ACL handling */
#define IEEE80211_MSG_WME       0x00000400      /* WME protocol */
#define IEEE80211_MSG_SUPERG    0x00000200      /* Atheros SuperG protocol */
#define IEEE80211_MSG_DOTH      0x00000100      /* 802.11h support */
#define IEEE80211_MSG_INACT     0x00000080      /* inactivity handling */
#define IEEE80211_MSG_ROAM      0x00000040      /* sta-mode roaming */
#define IEEE80211_MSG_RATECTL   0x00000020      /* tx rate control */
#define IEEE80211_MSG_ACTION    0x00000010      /* action frame handling */
#define IEEE80211_MSG_WDS       0x00000008      /* WDS handling */
#define IEEE80211_MSG_IOCTL     0x00000004      /* ioctl handling */
#define IEEE80211_MSG_TDMA      0x00000002      /* TDMA handling */
 
#define IEEE80211_MSG_ANY       0xffffffff      /* anything */
 
#define IEEE80211_MSG_BITS \
        "\20\2TDMA\3IOCTL\4WDS\5ACTION\6RATECTL\7ROAM\10INACT\11DOTH\12SUPERG" \
        "\13WME\14ACL\15WPA\16RADKEYS\17RADDUMP\20RADIUS\21DOT1XSM\22HWMP" \
        "\23POWER\24STATE\25OUTPUT\26SCAN\27AUTH\30ASSOC\31NODE\32ELEMID" \
        "\33XRATE\34INPUT\35CRYPTO\36DUPMPKTS\37DEBUG\04011N"
 
/* Helper macros unified. */
#define _IEEE80211_MASKSHIFT(_v, _f)    (((_v) & _f) >> _f##_S)
#define _IEEE80211_SHIFTMASK(_v, _f)    (((_v) << _f##_S) & _f)
 
#ifdef IEEE80211_DEBUG
#define ieee80211_msg(_vap, _m) ((_vap)->iv_debug & (_m))
#define IEEE80211_DPRINTF(_vap, _m, _fmt, ...) do {                     \
        if (ieee80211_msg(_vap, _m))                                    \
                ieee80211_note(_vap, _fmt, __VA_ARGS__);                \
} while (0)
#define IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...) do {                   \
        if (ieee80211_msg(_vap, _m))                                    \
                ieee80211_note_mac(_vap, (_ni)->ni_macaddr, _fmt, __VA_ARGS__);\
} while (0)
#define IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...) do {              \
        if (ieee80211_msg(_vap, _m))                                    \
                ieee80211_note_mac(_vap, _mac, _fmt, __VA_ARGS__);      \
} while (0)
#define IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...) do {             \
        if (ieee80211_msg(_vap, _m))                                    \
                ieee80211_note_frame(_vap, _wh, _fmt, __VA_ARGS__);     \
} while (0)
void    ieee80211_note(const struct ieee80211vap *, const char *, ...);
void    ieee80211_note_mac(const struct ieee80211vap *,
                const uint8_t mac[IEEE80211_ADDR_LEN], const char *, ...);
void    ieee80211_note_frame(const struct ieee80211vap *,
                const struct ieee80211_frame *, const char *, ...);
#define ieee80211_msg_debug(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_DEBUG)
#define ieee80211_msg_dumppkts(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_DUMPPKTS)
#define ieee80211_msg_input(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_INPUT)
#define ieee80211_msg_radius(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_RADIUS)
#define ieee80211_msg_dumpradius(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_RADDUMP)
#define ieee80211_msg_dumpradkeys(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_RADKEYS)
#define ieee80211_msg_scan(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_SCAN)
#define ieee80211_msg_assoc(_vap) \
        ((_vap)->iv_debug & IEEE80211_MSG_ASSOC)
 
/*
 * Emit a debug message about discarding a frame or information
 * element.  One format is for extracting the mac address from
 * the frame header; the other is for when a header is not
 * available or otherwise appropriate.
 */
#define IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...) do {         \
        if ((_vap)->iv_debug & (_m))                                    \
                ieee80211_discard_frame(_vap, _wh, _type,               \
                   "%s:%d: " _fmt, __func__, __LINE__, __VA_ARGS__);    \
} while (0)
#define IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...) do {      \
        if ((_vap)->iv_debug & (_m))                                    \
                ieee80211_discard_ie(_vap, _wh, _type,                  \
                    "%s:%d: " _fmt, __func__, __LINE__, __VA_ARGS__);   \
} while (0)
#define IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...) do {    \
        if ((_vap)->iv_debug & (_m))                                    \
                ieee80211_discard_mac(_vap, _mac, _type,                \
                    "%s:%d: " _fmt, __func__, __LINE__, __VA_ARGS__);   \
} while (0)
 
void ieee80211_discard_frame(const struct ieee80211vap *,
        const struct ieee80211_frame *, const char *type, const char *fmt, ...);
void ieee80211_discard_ie(const struct ieee80211vap *,
        const struct ieee80211_frame *, const char *type, const char *fmt, ...);
void ieee80211_discard_mac(const struct ieee80211vap *,
        const uint8_t mac[IEEE80211_ADDR_LEN], const char *type,
        const char *fmt, ...);
#else
#define IEEE80211_DPRINTF(_vap, _m, _fmt, ...)
#define IEEE80211_NOTE(_vap, _m, _ni, _fmt, ...)
#define IEEE80211_NOTE_FRAME(_vap, _m, _wh, _fmt, ...)
#define IEEE80211_NOTE_MAC(_vap, _m, _mac, _fmt, ...)
#define ieee80211_msg_dumppkts(_vap)    0
#define ieee80211_msg(_vap, _m)         0
 
#define IEEE80211_DISCARD(_vap, _m, _wh, _type, _fmt, ...)
#define IEEE80211_DISCARD_IE(_vap, _m, _wh, _type, _fmt, ...)
#define IEEE80211_DISCARD_MAC(_vap, _m, _mac, _type, _fmt, ...)
#endif
 
#endif /* _NET80211_IEEE80211_VAR_H_ */