1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2007-2009 Sam Leffler, Errno Consulting 5 * Copyright (c) 2007-2009 Intel Corporation 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 #ifndef _NET80211_IEEE80211_TDMA_H_ 31 #define _NET80211_IEEE80211_TDMA_H_ 32 33 /* 34 * TDMA-mode implementation definitions. 35 */ 36 37 #define TDMA_SUBTYPE_PARAM 0x01 38 #define TDMA_VERSION_V2 2 39 #define TDMA_VERSION TDMA_VERSION_V2 40 41 /* NB: we only support 2 right now but protocol handles up to 8 */ 42 #define TDMA_MAXSLOTS 2 /* max slots/sta's */ 43 44 #define TDMA_PARAM_LEN_V2 sizeof(struct ieee80211_tdma_param) 45 46 /* 47 * TDMA information element. 48 */ 49 struct ieee80211_tdma_param { 50 u_int8_t tdma_id; /* IEEE80211_ELEMID_VENDOR */ 51 u_int8_t tdma_len; 52 u_int8_t tdma_oui[3]; /* TDMA_OUI */ 53 u_int8_t tdma_type; /* TDMA_OUI_TYPE */ 54 u_int8_t tdma_subtype; /* TDMA_SUBTYPE_PARAM */ 55 u_int8_t tdma_version; /* spec revision */ 56 u_int8_t tdma_slot; /* station slot # [0..7] */ 57 u_int8_t tdma_slotcnt; /* bss slot count [1..8] */ 58 u_int16_t tdma_slotlen; /* bss slot len (100us) */ 59 u_int8_t tdma_bintval; /* beacon interval (superframes) */ 60 u_int8_t tdma_inuse[1]; /* slot occupancy map */ 61 u_int8_t tdma_pad[2]; 62 u_int8_t tdma_tstamp[8]; /* timestamp from last beacon */ 63 } __packed; 64 65 #ifdef _KERNEL 66 /* 67 * Implementation state. 68 */ 69 struct ieee80211_tdma_state { 70 u_int tdma_slotlen; /* bss slot length (us) */ 71 uint8_t tdma_version; /* protocol version to use */ 72 uint8_t tdma_slotcnt; /* bss slot count */ 73 uint8_t tdma_bintval; /* beacon interval (slots) */ 74 uint8_t tdma_slot; /* station slot # */ 75 uint8_t tdma_inuse[1]; /* mask of slots in use */ 76 uint8_t tdma_active[1]; /* mask of active slots */ 77 int tdma_count; /* active/inuse countdown */ 78 void *tdma_peer; /* peer station cookie */ 79 struct timeval tdma_lastprint; /* time of last rate-limited printf */ 80 int tdma_fails; /* fail count for rate-limiting */ 81 82 /* parent method pointers */ 83 int (*tdma_newstate)(struct ieee80211vap *, enum ieee80211_state, 84 int arg); 85 void (*tdma_recv_mgmt)(struct ieee80211_node *, 86 struct mbuf *, int, 87 const struct ieee80211_rx_stats *rxs, int, int); 88 void (*tdma_opdetach)(struct ieee80211vap *); 89 }; 90 91 #define TDMA_UPDATE_SLOT 0x0001 /* tdma_slot changed */ 92 #define TDMA_UPDATE_SLOTCNT 0x0002 /* tdma_slotcnt changed */ 93 #define TDMA_UPDATE_SLOTLEN 0x0004 /* tdma_slotlen changed */ 94 #define TDMA_UPDATE_BINTVAL 0x0008 /* tdma_bintval changed */ 95 96 void ieee80211_tdma_vattach(struct ieee80211vap *); 97 98 int ieee80211_tdma_getslot(struct ieee80211vap *vap); 99 void ieee80211_parse_tdma(struct ieee80211_node *ni, const uint8_t *ie); 100 uint8_t *ieee80211_add_tdma(uint8_t *frm, struct ieee80211vap *vap); 101 struct ieee80211_beacon_offsets; 102 void ieee80211_tdma_update_beacon(struct ieee80211vap *vap, 103 struct ieee80211_beacon_offsets *bo); 104 #endif /* _KERNEL */ 105 #endif /* !_NET80211_IEEE80211_TDMA_H_ */ 106