1 /*- 2 * Copyright (c) 2007-2009 Sam Leffler, Errno Consulting 3 * Copyright (c) 2007-2009 Intel Corporation 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/net80211/ieee80211_tdma.h 192468 2009-05-20 20:00:40Z sam $ 27 * $DragonFly$ 28 */ 29 #ifndef _NET80211_IEEE80211_TDMA_H_ 30 #define _NET80211_IEEE80211_TDMA_H_ 31 32 /* 33 * TDMA-mode implementation definitions. 34 */ 35 36 #define TDMA_SUBTYPE_PARAM 0x01 37 #define TDMA_VERSION_V2 2 38 #define TDMA_VERSION TDMA_VERSION_V2 39 40 /* NB: we only support 2 right now but protocol handles up to 8 */ 41 #define TDMA_MAXSLOTS 2 /* max slots/sta's */ 42 43 #define TDMA_PARAM_LEN_V2 sizeof(struct ieee80211_tdma_param) 44 45 /* 46 * TDMA information element. 47 */ 48 struct ieee80211_tdma_param { 49 u_int8_t tdma_id; /* IEEE80211_ELEMID_VENDOR */ 50 u_int8_t tdma_len; 51 u_int8_t tdma_oui[3]; /* TDMA_OUI */ 52 u_int8_t tdma_type; /* TDMA_OUI_TYPE */ 53 u_int8_t tdma_subtype; /* TDMA_SUBTYPE_PARAM */ 54 u_int8_t tdma_version; /* spec revision */ 55 u_int8_t tdma_slot; /* station slot # [0..7] */ 56 u_int8_t tdma_slotcnt; /* bss slot count [1..8] */ 57 u_int16_t tdma_slotlen; /* bss slot len (100us) */ 58 u_int8_t tdma_bintval; /* beacon interval (superframes) */ 59 u_int8_t tdma_inuse[1]; /* slot occupancy map */ 60 u_int8_t tdma_pad[2]; 61 u_int8_t tdma_tstamp[8]; /* timestamp from last beacon */ 62 } __packed; 63 64 #ifdef _KERNEL 65 /* 66 * Implementation state. 67 */ 68 struct ieee80211_tdma_state { 69 u_int tdma_slotlen; /* bss slot length (us) */ 70 uint8_t tdma_version; /* protocol version to use */ 71 uint8_t tdma_slotcnt; /* bss slot count */ 72 uint8_t tdma_bintval; /* beacon interval (slots) */ 73 uint8_t tdma_slot; /* station slot # */ 74 uint8_t tdma_inuse[1]; /* mask of slots in use */ 75 uint8_t tdma_active[1]; /* mask of active slots */ 76 int tdma_count; /* active/inuse countdown */ 77 void *tdma_peer; /* peer station cookie */ 78 struct timeval tdma_lastprint; /* time of last rate-limited printf */ 79 int tdma_fails; /* fail count for rate-limiting */ 80 81 /* parent method pointers */ 82 int (*tdma_newstate)(struct ieee80211vap *, enum ieee80211_state, 83 int arg); 84 void (*tdma_recv_mgmt)(struct ieee80211_node *, 85 struct mbuf *, int, int, int); 86 void (*tdma_opdetach)(struct ieee80211vap *); 87 }; 88 89 #define TDMA_UPDATE_SLOT 0x0001 /* tdma_slot changed */ 90 #define TDMA_UPDATE_SLOTCNT 0x0002 /* tdma_slotcnt changed */ 91 #define TDMA_UPDATE_SLOTLEN 0x0004 /* tdma_slotlen changed */ 92 #define TDMA_UPDATE_BINTVAL 0x0008 /* tdma_bintval changed */ 93 94 void ieee80211_tdma_vattach(struct ieee80211vap *); 95 96 int ieee80211_tdma_getslot(struct ieee80211vap *vap); 97 void ieee80211_parse_tdma(struct ieee80211_node *ni, const uint8_t *ie); 98 uint8_t *ieee80211_add_tdma(uint8_t *frm, struct ieee80211vap *vap); 99 struct ieee80211_beacon_offsets; 100 void ieee80211_tdma_update_beacon(struct ieee80211vap *vap, 101 struct ieee80211_beacon_offsets *bo); 102 #endif /* _KERNEL */ 103 #endif /* !_NET80211_IEEE80211_TDMA_H_ */ 104