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, 326 insertions, 0 deletions

diff --git a/sys/net80211/ieee80211.h b/sys/net80211/ieee80211.h
new file mode 100644
index 0000000..324a7a0
--- /dev/null
+++ b/sys/net80211/ieee80211.h
@@ -0,0 +1,326 @@
+/*-
+ * 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_H_
+#define _NET80211_IEEE80211_H_
+
+/*
+ * 802.11 protocol definitions.
+ */
+
+#define	IEEE80211_ADDR_LEN	6		/* size of 802.11 address */
+/* is 802.11 address multicast/broadcast? */
+#define	IEEE80211_IS_MULTICAST(_a)	(*(_a) & 0x01)
+
+/* IEEE 802.11 PLCP header */
+struct ieee80211_plcp_hdr {
+	u_int16_t	i_sfd;
+	u_int8_t	i_signal;
+	u_int8_t	i_service;
+	u_int16_t	i_length;
+	u_int16_t	i_crc;
+} __attribute__((__packed__));
+
+/*
+ * generic definitions for IEEE 802.11 frames
+ */
+struct ieee80211_frame {
+	u_int8_t	i_fc[2];
+	u_int8_t	i_dur[2];
+	u_int8_t	i_addr1[IEEE80211_ADDR_LEN];
+	u_int8_t	i_addr2[IEEE80211_ADDR_LEN];
+	u_int8_t	i_addr3[IEEE80211_ADDR_LEN];
+	u_int8_t	i_seq[2];
+	/* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
+	/* see below */
+} __attribute__((__packed__));
+
+struct ieee80211_frame_addr4 {
+	u_int8_t	i_fc[2];
+	u_int8_t	i_dur[2];
+	u_int8_t	i_addr1[IEEE80211_ADDR_LEN];
+	u_int8_t	i_addr2[IEEE80211_ADDR_LEN];
+	u_int8_t	i_addr3[IEEE80211_ADDR_LEN];
+	u_int8_t	i_seq[2];
+	u_int8_t	i_addr4[IEEE80211_ADDR_LEN];
+} __attribute__((__packed__));
+
+#define	IEEE80211_FC0_VERSION_MASK		0x03
+#define	IEEE80211_FC0_VERSION_SHIFT		0
+#define	IEEE80211_FC0_VERSION_0			0x00
+#define	IEEE80211_FC0_TYPE_MASK			0x0c
+#define	IEEE80211_FC0_TYPE_SHIFT		2
+#define	IEEE80211_FC0_TYPE_MGT			0x00
+#define	IEEE80211_FC0_TYPE_CTL			0x04
+#define	IEEE80211_FC0_TYPE_DATA			0x08
+
+#define	IEEE80211_FC0_SUBTYPE_MASK		0xf0
+#define	IEEE80211_FC0_SUBTYPE_SHIFT		4
+/* for TYPE_MGT */
+#define	IEEE80211_FC0_SUBTYPE_ASSOC_REQ		0x00
+#define	IEEE80211_FC0_SUBTYPE_ASSOC_RESP	0x10
+#define	IEEE80211_FC0_SUBTYPE_REASSOC_REQ	0x20
+#define	IEEE80211_FC0_SUBTYPE_REASSOC_RESP	0x30
+#define	IEEE80211_FC0_SUBTYPE_PROBE_REQ		0x40
+#define	IEEE80211_FC0_SUBTYPE_PROBE_RESP	0x50
+#define	IEEE80211_FC0_SUBTYPE_BEACON		0x80
+#define	IEEE80211_FC0_SUBTYPE_ATIM		0x90
+#define	IEEE80211_FC0_SUBTYPE_DISASSOC		0xa0
+#define	IEEE80211_FC0_SUBTYPE_AUTH		0xb0
+#define	IEEE80211_FC0_SUBTYPE_DEAUTH		0xc0
+/* for TYPE_CTL */
+#define	IEEE80211_FC0_SUBTYPE_PS_POLL		0xa0
+#define	IEEE80211_FC0_SUBTYPE_RTS		0xb0
+#define	IEEE80211_FC0_SUBTYPE_CTS		0xc0
+#define	IEEE80211_FC0_SUBTYPE_ACK		0xd0
+#define	IEEE80211_FC0_SUBTYPE_CF_END		0xe0
+#define	IEEE80211_FC0_SUBTYPE_CF_END_ACK	0xf0
+/* for TYPE_DATA (bit combination) */
+#define	IEEE80211_FC0_SUBTYPE_DATA		0x00
+#define	IEEE80211_FC0_SUBTYPE_CF_ACK		0x10
+#define	IEEE80211_FC0_SUBTYPE_CF_POLL		0x20
+#define	IEEE80211_FC0_SUBTYPE_CF_ACPL		0x30
+#define	IEEE80211_FC0_SUBTYPE_NODATA		0x40
+#define	IEEE80211_FC0_SUBTYPE_CFACK		0x50
+#define	IEEE80211_FC0_SUBTYPE_CFPOLL		0x60
+#define	IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK	0x70
+
+#define	IEEE80211_FC1_DIR_MASK			0x03
+#define	IEEE80211_FC1_DIR_NODS			0x00	/* STA->STA */
+#define	IEEE80211_FC1_DIR_TODS			0x01	/* STA->AP  */
+#define	IEEE80211_FC1_DIR_FROMDS		0x02	/* AP ->STA */
+#define	IEEE80211_FC1_DIR_DSTODS		0x03	/* AP ->AP  */
+
+#define	IEEE80211_FC1_MORE_FRAG			0x04
+#define	IEEE80211_FC1_RETRY			0x08
+#define	IEEE80211_FC1_PWR_MGT			0x10
+#define	IEEE80211_FC1_MORE_DATA			0x20
+#define	IEEE80211_FC1_WEP			0x40
+#define	IEEE80211_FC1_ORDER			0x80
+
+#define	IEEE80211_SEQ_FRAG_MASK			0x000f
+#define	IEEE80211_SEQ_FRAG_SHIFT		0
+#define	IEEE80211_SEQ_SEQ_MASK			0xfff0
+#define	IEEE80211_SEQ_SEQ_SHIFT			4
+
+#define	IEEE80211_NWID_LEN			32
+
+/*
+ * BEACON management packets
+ *
+ *	octet timestamp[8]
+ *	octet beacon interval[2]
+ *	octet capability information[2]
+ *	information element
+ *		octet elemid
+ *		octet length
+ *		octet information[length]
+ */
+
+typedef uint8_t *ieee80211_mgt_beacon_t;
+
+#define	IEEE80211_BEACON_INTERVAL(beacon) \
+	((beacon)[8] | ((beacon)[9] << 8))
+#define	IEEE80211_BEACON_CAPABILITY(beacon) \
+	((beacon)[10] | ((beacon)[11] << 8))
+
+#define	IEEE80211_CAPINFO_ESS			0x0001
+#define	IEEE80211_CAPINFO_IBSS			0x0002
+#define	IEEE80211_CAPINFO_CF_POLLABLE		0x0004
+#define	IEEE80211_CAPINFO_CF_POLLREQ		0x0008
+#define	IEEE80211_CAPINFO_PRIVACY		0x0010
+#define	IEEE80211_CAPINFO_SHORT_PREAMBLE	0x0020
+#define	IEEE80211_CAPINFO_PBCC			0x0040
+#define	IEEE80211_CAPINFO_CHNL_AGILITY		0x0080
+/* bits 8-9 are reserved */
+#define	IEEE80211_CAPINFO_SHORT_SLOTTIME	0x0400
+/* bits 11-12 are reserved */
+#define	IEEE80211_CAPINFO_DSSSOFDM		0x2000
+/* bits 14-15 are reserved */
+
+/*
+ * Management information elements
+ */
+struct ieee80211_information {
+	char	ssid[IEEE80211_NWID_LEN+1];
+	struct rates {
+		u_int8_t	*p;
+	} rates;
+	struct fh {
+		u_int16_t	dwell;
+		u_int8_t	set;
+		u_int8_t	pattern;
+		u_int8_t	index;
+	} fh;
+	struct ds {
+		u_int8_t	channel;
+	} ds;
+	struct cf {
+		u_int8_t	count;
+		u_int8_t	period;
+		u_int8_t	maxdur[2];
+		u_int8_t	dur[2];
+	} cf;
+	struct tim {
+		u_int8_t	count;
+		u_int8_t	period;
+		u_int8_t	bitctl;
+		/* u_int8_t	pvt[251]; The driver needs to use this. */
+	} tim;
+	struct ibss {
+		u_int16_t	atim;
+	} ibss;
+	struct challenge {
+		u_int8_t	*p;
+		u_int8_t	len;
+	} challenge;
+	struct erp {
+		u_int8_t	flags;
+	} erp;
+};
+
+enum {
+	IEEE80211_ELEMID_SSID			= 0,
+	IEEE80211_ELEMID_RATES			= 1,
+	IEEE80211_ELEMID_FHPARMS		= 2,
+	IEEE80211_ELEMID_DSPARMS		= 3,
+	IEEE80211_ELEMID_CFPARMS		= 4,
+	IEEE80211_ELEMID_TIM			= 5,
+	IEEE80211_ELEMID_IBSSPARMS		= 6,
+	IEEE80211_ELEMID_COUNTRY		= 7,
+	IEEE80211_ELEMID_CHALLENGE		= 16,
+	IEEE80211_ELEMID_ERP			= 42,
+	IEEE80211_ELEMID_XRATES			= 50,
+};
+
+#define	IEEE80211_RATE_BASIC			0x80
+#define	IEEE80211_RATE_VAL			0x7f
+
+/* EPR information element flags */
+#define	IEEE80211_ERP_NON_ERP_PRESENT		0x01
+#define	IEEE80211_ERP_USE_PROTECTION		0x02
+#define	IEEE80211_ERP_BARKER_MODE		0x04
+
+/*
+ * AUTH management packets
+ *
+ *	octet algo[2]
+ *	octet seq[2]
+ *	octet status[2]
+ *	octet chal.id
+ *	octet chal.length
+ *	octet chal.text[253]
+ */
+
+typedef u_int8_t *ieee80211_mgt_auth_t;
+
+#define	IEEE80211_AUTH_ALGORITHM(auth) \
+	((auth)[0] | ((auth)[1] << 8))
+#define	IEEE80211_AUTH_TRANSACTION(auth) \
+	((auth)[2] | ((auth)[3] << 8))
+#define	IEEE80211_AUTH_STATUS(auth) \
+	((auth)[4] | ((auth)[5] << 8))
+
+#define	IEEE80211_AUTH_ALG_OPEN			0x0000
+#define	IEEE80211_AUTH_ALG_SHARED		0x0001
+
+enum {
+	IEEE80211_AUTH_OPEN_REQUEST		= 1,
+	IEEE80211_AUTH_OPEN_RESPONSE		= 2,
+};
+
+enum {
+	IEEE80211_AUTH_SHARED_REQUEST		= 1,
+	IEEE80211_AUTH_SHARED_CHALLENGE		= 2,
+	IEEE80211_AUTH_SHARED_RESPONSE		= 3,
+	IEEE80211_AUTH_SHARED_PASS		= 4,
+};
+
+/*
+ * Reason codes
+ *
+ * Unlisted codes are reserved
+ */
+
+enum {
+	IEEE80211_REASON_UNSPECIFIED		= 1,
+	IEEE80211_REASON_AUTH_EXPIRE		= 2,
+	IEEE80211_REASON_AUTH_LEAVE		= 3,
+	IEEE80211_REASON_ASSOC_EXPIRE		= 4,
+	IEEE80211_REASON_ASSOC_TOOMANY		= 5,
+	IEEE80211_REASON_NOT_AUTHED		= 6,
+	IEEE80211_REASON_NOT_ASSOCED		= 7,
+	IEEE80211_REASON_ASSOC_LEAVE		= 8,
+	IEEE80211_REASON_ASSOC_NOT_AUTHED	= 9,
+
+	IEEE80211_STATUS_SUCCESS		= 0,
+	IEEE80211_STATUS_UNSPECIFIED		= 1,
+	IEEE80211_STATUS_CAPINFO		= 10,
+	IEEE80211_STATUS_NOT_ASSOCED		= 11,
+	IEEE80211_STATUS_OTHER			= 12,
+	IEEE80211_STATUS_ALG			= 13,
+	IEEE80211_STATUS_SEQUENCE		= 14,
+	IEEE80211_STATUS_CHALLENGE		= 15,
+	IEEE80211_STATUS_TIMEOUT		= 16,
+	IEEE80211_STATUS_TOOMANY		= 17,
+	IEEE80211_STATUS_BASIC_RATE		= 18,
+	IEEE80211_STATUS_SP_REQUIRED		= 19,
+	IEEE80211_STATUS_PBCC_REQUIRED		= 20,
+	IEEE80211_STATUS_CA_REQUIRED		= 21,
+	IEEE80211_STATUS_TOO_MANY_STATIONS	= 22,
+	IEEE80211_STATUS_RATES			= 23,
+	IEEE80211_STATUS_SHORTSLOT_REQUIRED	= 25,
+	IEEE80211_STATUS_DSSSOFDM_REQUIRED	= 26,
+};
+
+#define	IEEE80211_WEP_KEYLEN			5	/* 40bit */
+#define	IEEE80211_WEP_IVLEN			3	/* 24bit */
+#define	IEEE80211_WEP_KIDLEN			1	/* 1 octet */
+#define	IEEE80211_WEP_CRCLEN			4	/* CRC-32 */
+#define	IEEE80211_WEP_NKID			4	/* number of key ids */
+
+#define	IEEE80211_CRC_LEN			4
+
+#define	IEEE80211_MTU				1500
+#define	IEEE80211_MAX_LEN			(2300 + IEEE80211_CRC_LEN + \
+    (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
+
+/* 
+ * RTS frame length parameters.  The default is specified in
+ * the 802.11 spec.  The max may be wrong for jumbo frames.
+ */
+#define	IEEE80211_RTS_DEFAULT			512
+#define	IEEE80211_RTS_MIN			1
+#define	IEEE80211_RTS_MAX			IEEE80211_MAX_LEN
+
+enum {
+	IEEE80211_AUTH_NONE	= 0,
+	IEEE80211_AUTH_OPEN	= 1,
+	IEEE80211_AUTH_SHARED	= 2,
+};
+
+#endif /* _NET80211_IEEE80211_H_ */