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104 lines
4.0 KiB
C
104 lines
4.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2007-2009 Sam Leffler, Errno Consulting
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* Copyright (c) 2007-2009 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NET80211_IEEE80211_TDMA_H_
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#define _NET80211_IEEE80211_TDMA_H_
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/*
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* TDMA-mode implementation definitions.
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*/
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#define TDMA_SUBTYPE_PARAM 0x01
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#define TDMA_VERSION_V2 2
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#define TDMA_VERSION TDMA_VERSION_V2
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/* NB: we only support 2 right now but protocol handles up to 8 */
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#define TDMA_MAXSLOTS 2 /* max slots/sta's */
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#define TDMA_PARAM_LEN_V2 sizeof(struct ieee80211_tdma_param)
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/*
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* TDMA information element.
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*/
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struct ieee80211_tdma_param {
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u_int8_t tdma_id; /* IEEE80211_ELEMID_VENDOR */
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u_int8_t tdma_len;
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u_int8_t tdma_oui[3]; /* TDMA_OUI */
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u_int8_t tdma_type; /* TDMA_OUI_TYPE */
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u_int8_t tdma_subtype; /* TDMA_SUBTYPE_PARAM */
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u_int8_t tdma_version; /* spec revision */
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u_int8_t tdma_slot; /* station slot # [0..7] */
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u_int8_t tdma_slotcnt; /* bss slot count [1..8] */
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u_int16_t tdma_slotlen; /* bss slot len (100us) */
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u_int8_t tdma_bintval; /* beacon interval (superframes) */
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u_int8_t tdma_inuse[1]; /* slot occupancy map */
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u_int8_t tdma_pad[2];
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u_int8_t tdma_tstamp[8]; /* timestamp from last beacon */
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} __packed;
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#ifdef _KERNEL
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/*
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* Implementation state.
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*/
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struct ieee80211_tdma_state {
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u_int tdma_slotlen; /* bss slot length (us) */
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uint8_t tdma_version; /* protocol version to use */
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uint8_t tdma_slotcnt; /* bss slot count */
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uint8_t tdma_bintval; /* beacon interval (slots) */
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uint8_t tdma_slot; /* station slot # */
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uint8_t tdma_inuse[1]; /* mask of slots in use */
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uint8_t tdma_active[1]; /* mask of active slots */
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int tdma_count; /* active/inuse countdown */
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void *tdma_peer; /* peer station cookie */
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struct timeval tdma_lastprint; /* time of last rate-limited printf */
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int tdma_fails; /* fail count for rate-limiting */
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/* parent method pointers */
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int (*tdma_newstate)(struct ieee80211vap *, enum ieee80211_state,
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int arg);
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void (*tdma_recv_mgmt)(struct ieee80211_node *,
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struct mbuf *, int,
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const struct ieee80211_rx_stats *rxs, int, int);
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void (*tdma_opdetach)(struct ieee80211vap *);
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};
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#define TDMA_UPDATE_SLOT 0x0001 /* tdma_slot changed */
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#define TDMA_UPDATE_SLOTCNT 0x0002 /* tdma_slotcnt changed */
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#define TDMA_UPDATE_SLOTLEN 0x0004 /* tdma_slotlen changed */
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#define TDMA_UPDATE_BINTVAL 0x0008 /* tdma_bintval changed */
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void ieee80211_tdma_vattach(struct ieee80211vap *);
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int ieee80211_tdma_getslot(struct ieee80211vap *vap);
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void ieee80211_parse_tdma(struct ieee80211_node *ni, const uint8_t *ie);
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uint8_t *ieee80211_add_tdma(uint8_t *frm, struct ieee80211vap *vap);
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struct ieee80211_beacon_offsets;
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void ieee80211_tdma_update_beacon(struct ieee80211vap *vap,
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struct ieee80211_beacon_offsets *bo);
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#endif /* _KERNEL */
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#endif /* !_NET80211_IEEE80211_TDMA_H_ */
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