new 802.11 layer:

o code reorg (relative to old netbsd-derived code) for future growth
o drivers now specify available channels and rates and 802.11 layer handles
  almost all ifmedia actions
o multi-mode support for 11a/b/g devices
o 11g protocol additions (incomplete)
o new element id additions (for other than 11g)
o node/station table redone for proper locking and to eliminate driver
  incestuousness
o split device flags and capabilities to reduce confusion and provide room
  for expansion
o incomplete power management infrastructure (need to revisit)
o incomplete hooks for software retry
o more...

1 files changed, 142 insertions, 0 deletions

diff --git a/sys/net80211/ieee80211_node.h b/sys/net80211/ieee80211_node.h
new file mode 100644
index 0000000..a1ec779
--- /dev/null
+++ b/sys/net80211/ieee80211_node.h
@@ -0,0 +1,142 @@
+/*-
+ * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
+ * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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_NODE_H_
+#define _NET80211_IEEE80211_NODE_H_
+
+#define	IEEE80211_PSCAN_WAIT 	5		/* passive scan wait */
+#define	IEEE80211_TRANS_WAIT 	5		/* transition wait */
+#define	IEEE80211_INACT_WAIT	5		/* inactivity timer interval */
+#define	IEEE80211_INACT_MAX	(300/IEEE80211_INACT_WAIT)
+
+#define	IEEE80211_NODE_HASHSIZE	32
+/* simple hash is enough for variation of macaddr */
+#define	IEEE80211_NODE_HASH(addr)	\
+	(((u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % IEEE80211_NODE_HASHSIZE)
+
+#define	IEEE80211_RATE_SIZE	8		/* 802.11 standard */
+#define	IEEE80211_RATE_MAXSIZE	15		/* max rates we'll handle */
+
+struct ieee80211_rateset {
+	u_int8_t		rs_nrates;
+	u_int8_t		rs_rates[IEEE80211_RATE_MAXSIZE];
+};
+
+/*
+ * Node specific information.  Note that drivers are expected
+ * to derive from this structure to add device-specific per-node
+ * state.  This is done by overriding the ic_node_* methods in
+ * the ieee80211com structure.
+ */
+struct ieee80211_node {
+	TAILQ_ENTRY(ieee80211_node)	ni_list;
+	LIST_ENTRY(ieee80211_node)	ni_hash;
+	u_int			ni_refcnt;
+
+	/* hardware */
+	u_int8_t		ni_rssi;	/* recv ssi */
+	u_int32_t		ni_rstamp;	/* recv timestamp */
+	u_int8_t		ni_rantenna;	/* recv antenna */
+
+	/* header */
+	u_int8_t		ni_macaddr[IEEE80211_ADDR_LEN];
+	u_int8_t		ni_bssid[IEEE80211_ADDR_LEN];
+
+	/* beacon, probe response */
+	u_int8_t		ni_tstamp[8];	/* from last rcv'd beacon */
+	u_int16_t		ni_intval;	/* beacon interval */
+	u_int16_t		ni_capinfo;	/* capabilities */
+	u_int8_t		ni_esslen;
+	u_int8_t		ni_essid[IEEE80211_NWID_LEN];
+	struct ieee80211_rateset ni_rates;	/* negotiated rate set */
+	u_int8_t		*ni_country;	/* country information XXX */
+	struct ieee80211_channel *ni_chan;
+	u_int16_t		ni_fhdwell;	/* FH only */
+	u_int8_t		ni_fhindex;	/* FH only */
+	u_int8_t		ni_erp;		/* 11g only */
+
+#ifdef notyet
+	/* DTIM and contention free period (CFP) */
+	u_int8_t		ni_dtimperiod;
+	u_int8_t		ni_cfpperiod;	/* # of DTIMs between CFPs */
+	u_int16_t		ni_cfpduremain;	/* remaining cfp duration */
+	u_int16_t		ni_cfpmaxduration;/* max CFP duration in TU */
+	u_int16_t		ni_nextdtim;	/* time to next DTIM */
+	u_int16_t		ni_timoffset;
+#endif
+
+	/* others */
+	u_int16_t		ni_associd;	/* assoc response */
+	u_int16_t		ni_txseq;	/* seq to be transmitted */
+	u_int16_t		ni_rxseq;	/* seq previous received */
+	int			ni_fails;	/* failure count to associate */
+	int			ni_inact;	/* inactivity mark count */
+	int			ni_txrate;	/* index to ni_rates[] */
+};
+
+static __inline struct ieee80211_node *
+ieee80211_ref_node(struct ieee80211_node *ni)
+{
+	atomic_add_int(&ni->ni_refcnt, 1);
+	return ni;
+}
+
+static __inline void
+ieee80211_unref_node(struct ieee80211_node **ni)
+{
+	atomic_subtract_int(&(*ni)->ni_refcnt, 1);
+	*ni = NULL;			/* guard against use */
+}
+
+struct ieee80211com;
+
+extern	void ieee80211_node_attach(struct ifnet *);
+extern	void ieee80211_node_detach(struct ifnet *);
+
+extern	void ieee80211_reset_scan(struct ifnet *);
+extern	void ieee80211_begin_scan(struct ifnet *, struct ieee80211_node *);
+extern	void ieee80211_next_scan(struct ifnet *);
+extern	void ieee80211_end_scan(struct ifnet *);
+extern	struct ieee80211_node *ieee80211_alloc_node(struct ieee80211com *,
+		u_int8_t *);
+extern	struct ieee80211_node *ieee80211_dup_bss(struct ieee80211com *,
+		u_int8_t *);
+extern	struct ieee80211_node *ieee80211_find_node(struct ieee80211com *,
+		u_int8_t *);
+extern	struct ieee80211_node * ieee80211_lookup_node(struct ieee80211com *,
+		u_int8_t *macaddr, struct ieee80211_channel *);
+extern	void ieee80211_free_node(struct ieee80211com *,
+		struct ieee80211_node *);
+extern	void ieee80211_free_allnodes(struct ieee80211com *);
+typedef void ieee80211_iter_func(void *, struct ieee80211_node *);
+extern	void ieee80211_iterate_nodes(struct ieee80211com *ic,
+		ieee80211_iter_func *, void *);
+extern	void ieee80211_timeout_nodes(struct ieee80211com *);
+
+extern	void ieee80211_create_ibss(struct ieee80211com* ,
+		struct ieee80211_channel *);
+#endif /* _NET80211_IEEE80211_NODE_H_ */