From 98ad45c3d3f257c3649d4e198723267231203184 Mon Sep 17 00:00:00 2001 From: sam Date: Thu, 8 Jan 2009 17:12:47 +0000 Subject: TDMA support for long distance point-to-point links using ath devices: o add net80211 support for a tdma vap that is built on top of the existing adhoc-demo support o add tdma scheduling of frame transmission to the ath driver; it's conceivable other devices might be capable of this too in which case they can make use of the 802.11 protocol additions etc. o add minor bits to user tools that need to know: ifconfig to setup and configure, new statistics in athstats, and new debug mask bits While the architecture can support >2 slots in a TDMA BSS the current design is intended (and tested) for only 2 slots. Sponsored by: Intel --- sys/net80211/ieee80211_tdma.h | 66 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 sys/net80211/ieee80211_tdma.h (limited to 'sys/net80211/ieee80211_tdma.h') diff --git a/sys/net80211/ieee80211_tdma.h b/sys/net80211/ieee80211_tdma.h new file mode 100644 index 0000000..c5ac3a2 --- /dev/null +++ b/sys/net80211/ieee80211_tdma.h @@ -0,0 +1,66 @@ +/*- + * 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. + */ +struct ieee80211_tdma_state { + u_int tdma_slotlen; /* bss slot length (us) */ + 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 */ +#define IEEE80211_TDMA_MAXSLOTS 8 + void *tdma_peer; /* peer station cookie */ + uint8_t tdma_active[1]; /* mask of active slots */ + int tdma_count; /* active/inuse countdown */ + + /* parent method pointers */ + int (*tdma_newstate)(struct ieee80211vap *, enum ieee80211_state, + int arg); + void (*tdma_recv_mgmt)(struct ieee80211_node *, + struct mbuf *, int, int, int, uint32_t); + void (*tdma_opdetach)(struct ieee80211vap *); +}; + +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); +struct ieee80211req; +int ieee80211_tdma_ioctl_get80211(struct ieee80211vap *vap, + struct ieee80211req *ireq); +int ieee80211_tdma_ioctl_set80211(struct ieee80211vap *vap, + struct ieee80211req *ireq); +#endif /* !_NET80211_IEEE80211_TDMA_H_ */ -- cgit v1.1