xref: /src/sys/net80211/ieee80211_var.h

/*-
 * Copyright (c) 2001 Atsushi Onoe
 * Copyright (c) 2002-2005 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.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * 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_var.h,v 1.22 2005/07/06 15:38:27 sam Exp $
 */
#ifndef _NET80211_IEEE80211_VAR_H_
#define _NET80211_IEEE80211_VAR_H_

/*
 * Definitions for IEEE 802.11 drivers.
 */
#define	IEEE80211_DEBUG
#undef	IEEE80211_DEBUG_REFCNT			/* node refcnt stuff */

/* NB: portability glue must go first */
#ifdef __NetBSD__
#include <net80211/ieee80211_netbsd.h>
#elif __FreeBSD__
#include <net80211/ieee80211_freebsd.h>
#elif __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_crypto.h>
#include <net80211/ieee80211_ioctl.h>		/* for ieee80211_stats */
#include <net80211/ieee80211_node.h>
#include <net80211/ieee80211_proto.h>

#define	IEEE80211_TXPOWER_MAX	100	/* .5 dbM (XXX units?) */
#define	IEEE80211_TXPOWER_MIN	0	/* kill radio */

#define	IEEE80211_DTIM_MAX	15	/* max DTIM period */
#define	IEEE80211_DTIM_MIN	1	/* min DTIM period */
#define	IEEE80211_DTIM_DEFAULT	1	/* default DTIM period */

#define	IEEE80211_BINTVAL_MAX	500	/* max beacon interval (TU's) */
#define	IEEE80211_BINTVAL_MIN	25	/* min beacon interval (TU's) */
#define	IEEE80211_BINTVAL_DEFAULT 100	/* default beacon interval (TU's) */

#define	IEEE80211_PS_SLEEP	0x1	/* STA is in power saving mode */
#define	IEEE80211_PS_MAX_QUEUE	50	/* maximum saved packets */

#define	IEEE80211_MS_TO_TU(x)	(((x) * 1000) / 1024)
#define	IEEE80211_TU_TO_MS(x)	(((x) * 1024) / 1000)

struct ieee80211_aclator;
struct sysctl_ctx_list;

struct ieee80211com {
	SLIST_ENTRY(ieee80211com) ic_next;
	struct ifnet		*ic_ifp;	/* associated device */
	struct ieee80211_stats	ic_stats;	/* statistics */
	struct sysctl_ctx_list	*ic_sysctl;	/* dynamic sysctl context */
	u_int32_t		ic_debug;	/* debug msg flags */
	int			ic_vap;		/* virtual AP index */
	ieee80211_beacon_lock_t	ic_beaconlock;	/* beacon update lock */

	int			(*ic_reset)(struct ifnet *);
	void			(*ic_recv_mgmt)(struct ieee80211com *,
				    struct mbuf *, struct ieee80211_node *,
				    int, int, u_int32_t);
	int			(*ic_send_mgmt)(struct ieee80211com *,
				    struct ieee80211_node *, int, int);
	int			(*ic_newstate)(struct ieee80211com *,
				    enum ieee80211_state, int);
	void			(*ic_newassoc)(struct ieee80211com *,
				    struct ieee80211_node *, int);
	void			(*ic_updateslot)(struct ifnet *);
	void			(*ic_set_tim)(struct ieee80211com *,
				    struct ieee80211_node *, int);
	u_int8_t		ic_myaddr[IEEE80211_ADDR_LEN];
	struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
	struct ieee80211_channel ic_channels[IEEE80211_CHAN_MAX+1];
	u_int8_t		ic_chan_avail[IEEE80211_CHAN_BYTES];
	u_int8_t		ic_chan_active[IEEE80211_CHAN_BYTES];
	u_int8_t		ic_chan_scan[IEEE80211_CHAN_BYTES];
	struct ieee80211_node_table ic_scan;	/* scan candidates */
	struct ifqueue		ic_mgtq;
	u_int32_t		ic_flags;	/* state flags */
	u_int32_t		ic_caps;	/* capabilities */
	u_int16_t		ic_modecaps;	/* set of mode capabilities */
	u_int16_t		ic_curmode;	/* current mode */
	enum ieee80211_phytype	ic_phytype;	/* XXX wrong for multi-mode */
	enum ieee80211_opmode	ic_opmode;	/* operation mode */
	enum ieee80211_state	ic_state;	/* 802.11 state */
	enum ieee80211_protmode	ic_protmode;	/* 802.11g protection mode */
	enum ieee80211_roamingmode ic_roaming;	/* roaming mode */
	struct ieee80211_node_table ic_sta;	/* stations/neighbors */
	u_int32_t		*ic_aid_bitmap;	/* association id map */
	u_int16_t		ic_max_aid;
	u_int16_t		ic_sta_assoc;	/* stations associated */
	u_int16_t		ic_ps_sta;	/* stations in power save */
	u_int16_t		ic_ps_pending;	/* ps sta's w/ pending frames */
	u_int8_t		*ic_tim_bitmap;	/* power-save stations w/ data*/
	u_int16_t		ic_tim_len;	/* ic_tim_bitmap size (bytes) */
	u_int8_t		ic_dtim_period;	/* DTIM period */
	u_int8_t		ic_dtim_count;	/* DTIM count for last bcn */
	struct ifmedia		ic_media;	/* interface media config */
	struct bpf_if		*ic_rawbpf;	/* packet filter structure */
	struct ieee80211_node	*ic_bss;	/* information for this node */
	struct ieee80211_channel *ic_ibss_chan;
	int			ic_fixed_rate;	/* index to ic_sup_rates[] */
	u_int16_t		ic_rtsthreshold;
	u_int16_t		ic_fragthreshold;
	struct ieee80211_node	*(*ic_node_alloc)(struct ieee80211_node_table*);
	void			(*ic_node_free)(struct ieee80211_node *);
	void			(*ic_node_cleanup)(struct ieee80211_node *);
	u_int8_t		(*ic_node_getrssi)(const struct ieee80211_node*);
	u_int16_t		ic_lintval;	/* listen interval */
	u_int16_t		ic_holdover;	/* PM hold over duration */
	u_int16_t		ic_txmin;	/* min tx retry count */
	u_int16_t		ic_txmax;	/* max tx retry count */
	u_int16_t		ic_txlifetime;	/* tx lifetime */
	u_int16_t		ic_txpowlimit;	/* global tx power limit */
	u_int16_t		ic_bmisstimeout;/* beacon miss threshold (ms) */
	u_int16_t		ic_nonerpsta;	/* # non-ERP stations */
	u_int16_t		ic_longslotsta;	/* # long slot time stations */
	int			ic_mgt_timer;	/* mgmt timeout */
	int			ic_inact_timer;	/* inactivity timer wait */
	int			ic_des_esslen;
	u_int8_t		ic_des_essid[IEEE80211_NWID_LEN];
	struct ieee80211_channel *ic_des_chan;	/* desired channel */
	u_int8_t		ic_des_bssid[IEEE80211_ADDR_LEN];
	void			*ic_opt_ie;	/* user-specified IE's */
	u_int16_t		ic_opt_ie_len;	/* length of ni_opt_ie */
	/*
	 * Inactivity timer settings for nodes.
	 */
	int			ic_inact_init;	/* initial setting */
	int			ic_inact_auth;	/* auth but not assoc setting */
	int			ic_inact_run;	/* authorized setting */
	int			ic_inact_probe;	/* inactive probe time */

	/*
	 * WME/WMM state.
	 */
	struct ieee80211_wme_state ic_wme;

	/*
	 * Cipher state/configuration.
	 */
	struct ieee80211_crypto_state ic_crypto;
#define	ic_nw_keys	ic_crypto.cs_nw_keys	/* XXX compatibility */
#define	ic_def_txkey	ic_crypto.cs_def_txkey	/* XXX compatibility */

	/*
	 * 802.1x glue.  When an authenticator attaches it
	 * fills in this section.  We assume that when ic_ec
	 * is setup that the methods are safe to call.
	 */
	const struct ieee80211_authenticator *ic_auth;
	struct eapolcom		*ic_ec;

	/*
	 * Access control glue.  When a control agent attaches
	 * it fills in this section.  We assume that when ic_ac
	 * is setup that the methods are safe to call.
	 */
	const struct ieee80211_aclator *ic_acl;
	void			*ic_as;
};

#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 */
/* NB: bits 0x4f available */
/* 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 */
#define	IEEE80211_F_ASCAN	0x00000100	/* STATUS: active scan */
#define	IEEE80211_F_SIBSS	0x00000200	/* STATUS: start IBSS */
/* 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_ROAMING	0x00004000	/* CONF: roaming enabled (???)*/
#define	IEEE80211_F_SWRETRY	0x00008000	/* CONF: sw tx retry enabled */
#define IEEE80211_F_TXPOW_FIXED	0x00010000	/* TX Power: fixed rate */
#define	IEEE80211_F_IBSSON	0x00020000	/* CONF: IBSS creation enable */
#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_TIMUPDATE	0x00400000	/* STATUS: update beacon tim */
#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_WMEUPDATE	0x20000000	/* STATUS: update beacon wme */

/* ic_caps */
#define	IEEE80211_C_WEP		0x00000001	/* CAPABILITY: WEP available */
#define	IEEE80211_C_TKIP	0x00000002	/* CAPABILITY: TKIP available */
#define	IEEE80211_C_AES		0x00000004	/* CAPABILITY: AES OCB avail */
#define	IEEE80211_C_AES_CCM	0x00000008	/* CAPABILITY: AES CCM avail */
#define	IEEE80211_C_CKIP	0x00000020	/* CAPABILITY: CKIP available */
#define	IEEE80211_C_IBSS	0x00000100	/* CAPABILITY: IBSS available */
#define	IEEE80211_C_PMGT	0x00000200	/* CAPABILITY: Power mgmt */
#define	IEEE80211_C_HOSTAP	0x00000400	/* CAPABILITY: HOSTAP avail */
#define	IEEE80211_C_AHDEMO	0x00000800	/* CAPABILITY: Old Adhoc Demo */
#define	IEEE80211_C_SWRETRY	0x00001000	/* CAPABILITY: sw tx retry */
#define	IEEE80211_C_TXPMGT	0x00002000	/* CAPABILITY: tx power mgmt */
#define	IEEE80211_C_SHSLOT	0x00004000	/* CAPABILITY: short slottime */
#define	IEEE80211_C_SHPREAMBLE	0x00008000	/* CAPABILITY: short preamble */
#define	IEEE80211_C_MONITOR	0x00010000	/* CAPABILITY: monitor mode */
#define	IEEE80211_C_TKIPMIC	0x00020000	/* CAPABILITY: TKIP MIC avail */
#define	IEEE80211_C_WPA1	0x00800000	/* CAPABILITY: WPA1 avail */
#define	IEEE80211_C_WPA2	0x01000000	/* CAPABILITY: WPA2 avail */
#define	IEEE80211_C_WPA		0x01800000	/* CAPABILITY: WPA1+WPA2 avail*/
#define	IEEE80211_C_BURST	0x02000000	/* CAPABILITY: frame bursting */
#define	IEEE80211_C_WME		0x04000000	/* CAPABILITY: WME avail */
/* XXX protection/barker? */

#define	IEEE80211_C_CRYPTO	0x0000002f	/* CAPABILITY: crypto alg's */

void	ieee80211_ifattach(struct ieee80211com *);
void	ieee80211_ifdetach(struct ieee80211com *);
void	ieee80211_announce(struct ieee80211com *);
void	ieee80211_media_init(struct ieee80211com *,
		ifm_change_cb_t, ifm_stat_cb_t);
struct ieee80211com *ieee80211_find_vap(const u_int8_t mac[IEEE80211_ADDR_LEN]);
int	ieee80211_media_change(struct ifnet *);
void	ieee80211_media_status(struct ifnet *, struct ifmediareq *);
int	ieee80211_ioctl(struct ieee80211com *, u_long, caddr_t);
int	ieee80211_cfgget(struct ieee80211com *, u_long, caddr_t);
int	ieee80211_cfgset(struct ieee80211com *, u_long, caddr_t);
void	ieee80211_watchdog(struct ieee80211com *);
int	ieee80211_rate2media(struct ieee80211com *, int,
		enum ieee80211_phymode);
int	ieee80211_media2rate(int);
u_int	ieee80211_mhz2ieee(u_int, u_int);
u_int	ieee80211_chan2ieee(struct ieee80211com *, struct ieee80211_channel *);
u_int	ieee80211_ieee2mhz(u_int, u_int);
int	ieee80211_setmode(struct ieee80211com *, enum ieee80211_phymode);
enum ieee80211_phymode ieee80211_chan2mode(struct ieee80211com *,
		struct ieee80211_channel *);

/*
 * Key update synchronization methods.  XXX should not be visible.
 */
static __inline void
ieee80211_key_update_begin(struct ieee80211com *ic)
{
	ic->ic_crypto.cs_key_update_begin(ic);
}
static __inline void
ieee80211_key_update_end(struct ieee80211com *ic)
{
	ic->ic_crypto.cs_key_update_end(ic);
}

/*
 * 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(u_int32_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(u_int32_t));
	return size;
}

#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_DOT1X	0x00020000	/* 802.1x authenticator */
#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_RADKEYS	0x00002000	/* dump 802.1x keys */
#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_ANY	0xffffffff	/* anything */

#ifdef IEEE80211_DEBUG
#define	IEEE80211_DPRINTF(_ic, _m, _fmt, ...) do {	\
	if (_ic->ic_debug & (_m))			\
		printf(_fmt, __VA_ARGS__);		\
} while (0)
#define	ieee80211_msg_debug(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_DEBUG)
#define	ieee80211_msg_dumppkts(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_DUMPPKTS)
#define	ieee80211_msg_input(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_INPUT)
#define	ieee80211_msg_radius(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_RADIUS)
#define	ieee80211_msg_dumpradius(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_RADDUMP)
#define	ieee80211_msg_dumpradkeys(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_RADKEYS)
#define	ieee80211_msg_scan(_ic) \
	((_ic)->ic_debug & IEEE80211_MSG_SCAN)
#else
#define	IEEE80211_DPRINTF(_ic, _m, _fmt, ...)
#endif

#endif /* _NET80211_IEEE80211_VAR_H_ */