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

1 files changed, 66 insertions, 0 deletions

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_ */