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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2007-2009 Sam Leffler, Errno Consulting
* Copyright (c) 2007-2009 Intel Corporation
* 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_TDMA_H_
#define _NET80211_IEEE80211_TDMA_H_
/*
* TDMA-mode implementation definitions.
*/
#define TDMA_SUBTYPE_PARAM 0x01
#define TDMA_VERSION_V2 2
#define TDMA_VERSION TDMA_VERSION_V2
/* NB: we only support 2 right now but protocol handles up to 8 */
#define TDMA_MAXSLOTS 2 /* max slots/sta's */
#define TDMA_PARAM_LEN_V2 sizeof(struct ieee80211_tdma_param)
/*
* TDMA information element.
*/
struct ieee80211_tdma_param {
u_int8_t tdma_id; /* IEEE80211_ELEMID_VENDOR */
u_int8_t tdma_len;
u_int8_t tdma_oui[3]; /* TDMA_OUI */
u_int8_t tdma_type; /* TDMA_OUI_TYPE */
u_int8_t tdma_subtype; /* TDMA_SUBTYPE_PARAM */
u_int8_t tdma_version; /* spec revision */
u_int8_t tdma_slot; /* station slot # [0..7] */
u_int8_t tdma_slotcnt; /* bss slot count [1..8] */
u_int16_t tdma_slotlen; /* bss slot len (100us) */
u_int8_t tdma_bintval; /* beacon interval (superframes) */
u_int8_t tdma_inuse[1]; /* slot occupancy map */
u_int8_t tdma_pad[2];
u_int8_t tdma_tstamp[8]; /* timestamp from last beacon */
} __packed;
#ifdef _KERNEL
/*
* Implementation state.
*/
struct ieee80211_tdma_state {
u_int tdma_slotlen; /* bss slot length (us) */
uint8_t tdma_version; /* protocol version to use */
uint8_t tdma_slotcnt; /* bss slot count */
uint8_t tdma_bintval; /* beacon interval (slots) */
uint8_t tdma_slot; /* station slot # */
uint8_t tdma_inuse[1]; /* mask of slots in use */
uint8_t tdma_active[1]; /* mask of active slots */
int tdma_count; /* active/inuse countdown */
void *tdma_peer; /* peer station cookie */
struct timeval tdma_lastprint; /* time of last rate-limited printf */
int tdma_fails; /* fail count for rate-limiting */
/* parent method pointers */
int (*tdma_newstate)(struct ieee80211vap *, enum ieee80211_state,
int arg);
void (*tdma_recv_mgmt)(struct ieee80211_node *,
struct mbuf *, int,
const struct ieee80211_rx_stats *rxs, int, int);
void (*tdma_opdetach)(struct ieee80211vap *);
};
#define TDMA_UPDATE_SLOT 0x0001 /* tdma_slot changed */
#define TDMA_UPDATE_SLOTCNT 0x0002 /* tdma_slotcnt changed */
#define TDMA_UPDATE_SLOTLEN 0x0004 /* tdma_slotlen changed */
#define TDMA_UPDATE_BINTVAL 0x0008 /* tdma_bintval changed */
void ieee80211_tdma_vattach(struct ieee80211vap *);
int ieee80211_tdma_getslot(struct ieee80211vap *vap);
void ieee80211_parse_tdma(struct ieee80211_node *ni, const uint8_t *ie);
uint8_t *ieee80211_add_tdma(uint8_t *frm, struct ieee80211vap *vap);
struct ieee80211_beacon_offsets;
void ieee80211_tdma_update_beacon(struct ieee80211vap *vap,
struct ieee80211_beacon_offsets *bo);
#endif /* _KERNEL */
#endif /* !_NET80211_IEEE80211_TDMA_H_ */
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