First step in Bluetooth protocol stack support.

The code is adopted from the FreeBSD netgraph-based Bluetooth
implementation by Maksim Yevmenkin <m_evmenkin@yahoo.com> but
all netgraph glue was replaced with usual BSD network stack
hooks. This is a work in progress. Only HCI layer works for now,
L2CAP and RFCOMM are on the way.

Help in testing from many, ok markus@.

1 files changed, 338 insertions, 0 deletions

diff --git a/sys/netbt/rfcomm_var.h b/sys/netbt/rfcomm_var.h
new file mode 100644
index 00000000000..1fe7f720d24
--- /dev/null
+++ b/sys/netbt/rfcomm_var.h
@@ -0,0 +1,338 @@
+/*	$OpenBSD: rfcomm_var.h,v 1.1 2005/01/14 12:04:02 grange Exp $	*/
+
+/*
+ * ng_btsocket_rfcomm.h
+ *
+ * Copyright (c) 2001-2003 Maksim Yevmenkin <m_evmenkin@yahoo.com>
+ * 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.
+ *
+ * $Id: rfcomm_var.h,v 1.1 2005/01/14 12:04:02 grange Exp $
+ * $FreeBSD: src/sys/netgraph/bluetooth/include/ng_btsocket_rfcomm.h,v 1.2 2003/11/14 03:45:29 emax Exp $
+ */
+
+#ifndef _NETGRAPH_BTSOCKET_RFCOMM_H_
+#define _NETGRAPH_BTSOCKET_RFCOMM_H_
+
+/*****************************************************************************
+ *****************************************************************************
+ **                              RFCOMM                                     **
+ *****************************************************************************
+ *****************************************************************************/
+
+/* XXX FIXME this does not belong here */
+
+#define RFCOMM_DEFAULT_MTU		127
+#define RFCOMM_MAX_MTU			1024
+
+#define RFCOMM_DEFAULT_CREDITS		7
+#define RFCOMM_MAX_CREDITS		40
+
+/* RFCOMM frame types */
+#define RFCOMM_FRAME_SABM		0x2f
+#define RFCOMM_FRAME_DISC		0x43
+#define RFCOMM_FRAME_UA			0x63
+#define RFCOMM_FRAME_DM			0x0f
+#define RFCOMM_FRAME_UIH		0xef
+
+/* RFCOMM MCC commands */
+#define RFCOMM_MCC_TEST			0x08 /* Test */
+#define RFCOMM_MCC_FCON			0x28 /* Flow Control on */
+#define RFCOMM_MCC_FCOFF		0x18 /* Flow Control off */
+#define RFCOMM_MCC_MSC			0x38 /* Modem Status Command */
+#define RFCOMM_MCC_RPN			0x24 /* Remote Port Negotiation */
+#define RFCOMM_MCC_RLS			0x14 /* Remote Line Status */
+#define RFCOMM_MCC_PN			0x20 /* Port Negotiation */
+#define RFCOMM_MCC_NSC			0x04 /* Non Supported Command */
+
+/* RFCOMM modem signals */
+#define RFCOMM_MODEM_FC			0x02 /* Flow Control asserted */
+#define RFCOMM_MODEM_RTC		0x04 /* Ready To Communicate */
+#define RFCOMM_MODEM_RTR		0x08 /* Ready To Receive */
+#define RFCOMM_MODEM_IC			0x40 /* Incomming Call */
+#define RFCOMM_MODEM_DV			0x80 /* Data Valid */
+
+/* RPN parameters - baud rate */
+#define RFCOMM_RPN_BR_2400		0x0
+#define RFCOMM_RPN_BR_4800		0x1
+#define RFCOMM_RPN_BR_7200		0x2
+#define RFCOMM_RPN_BR_9600		0x3
+#define RFCOMM_RPN_BR_19200		0x4
+#define RFCOMM_RPN_BR_38400		0x5
+#define RFCOMM_RPN_BR_57600		0x6
+#define RFCOMM_RPN_BR_115200		0x7
+#define RFCOMM_RPN_BR_230400		0x8
+
+/* RPN parameters - data bits */
+#define RFCOMM_RPN_DATA_5		0x0
+#define RFCOMM_RPN_DATA_6		0x1
+#define RFCOMM_RPN_DATA_7		0x2
+#define RFCOMM_RPN_DATA_8		0x3
+
+/* RPN parameters - stop bit */
+#define RFCOMM_RPN_STOP_1		0
+#define RFCOMM_RPN_STOP_15		1
+
+/* RPN parameters - parity */
+#define RFCOMM_RPN_PARITY_NONE		0x0
+#define RFCOMM_RPN_PARITY_ODD		0x4
+#define RFCOMM_RPN_PARITY_EVEN		0x5
+#define RFCOMM_RPN_PARITY_MARK		0x6
+#define RFCOMM_RPN_PARITY_SPACE		0x7
+
+/* RPN parameters - flow control */
+#define RFCOMM_RPN_FLOW_NONE		0x00
+#define RFCOMM_RPN_XON_CHAR		0x11
+#define RFCOMM_RPN_XOFF_CHAR		0x13
+
+/* RPN parameters - mask */
+#define RFCOMM_RPN_PM_BITRATE		0x0001
+#define RFCOMM_RPN_PM_DATA		0x0002
+#define RFCOMM_RPN_PM_STOP		0x0004
+#define RFCOMM_RPN_PM_PARITY		0x0008
+#define RFCOMM_RPN_PM_PARITY_TYPE	0x0010
+#define RFCOMM_RPN_PM_XON		0x0020
+#define RFCOMM_RPN_PM_XOFF		0x0040
+#define RFCOMM_RPN_PM_FLOW		0x3F00
+#define RFCOMM_RPN_PM_ALL		0x3F7F
+
+/* RFCOMM frame header */
+struct rfcomm_frame_hdr 
+{
+	u_int8_t	address;
+	u_int8_t	control;
+	u_int8_t	length;	/* Actual size could be 2 bytes */
+} __attribute__ ((packed));
+
+/* RFCOMM command frame header */
+struct rfcomm_cmd_hdr
+{
+	u_int8_t	address;
+	u_int8_t	control;
+	u_int8_t	length;
+	u_int8_t	fcs;
+} __attribute__ ((packed));
+                
+/* RFCOMM MCC command header */
+struct rfcomm_mcc_hdr
+{
+	u_int8_t	type;
+	u_int8_t	length; /* XXX FIXME Can actual size be 2 bytes?? */
+} __attribute__ ((packed));
+
+/* RFCOMM MSC command */
+struct rfcomm_mcc_msc
+{
+	u_int8_t	address;
+	u_int8_t	modem;
+} __attribute__ ((packed));
+
+/* RFCOMM RPN command */
+struct rfcomm_mcc_rpn
+{
+	u_int8_t	dlci;
+	u_int8_t	bit_rate;
+	u_int8_t	line_settings;
+	u_int8_t	flow_control;
+	u_int8_t	xon_char;
+	u_int8_t	xoff_char;
+	u_int16_t	param_mask;
+} __attribute__ ((packed));
+
+/* RFCOMM RLS command */
+struct rfcomm_mcc_rls
+{
+	u_int8_t	address;
+	u_int8_t	status;
+} __attribute__ ((packed));
+
+/* RFCOMM PN command */
+struct rfcomm_mcc_pn
+{
+	u_int8_t	dlci;
+	u_int8_t	flow_control;
+	u_int8_t	priority;
+	u_int8_t	ack_timer;
+	u_int16_t	mtu;
+	u_int8_t	max_retrans;
+	u_int8_t	credits;
+} __attribute__ ((packed));
+
+/* RFCOMM frame parsing macros */
+#define RFCOMM_DLCI(b)			(((b) & 0xfc) >> 2)
+#define RFCOMM_CHANNEL(b)		(((b) & 0xf8) >> 3)
+#define RFCOMM_DIRECTION(b)		(((b) & 0x04) >> 2)
+#define RFCOMM_TYPE(b)			(((b) & 0xef))
+  
+#define RFCOMM_EA(b)			(((b) & 0x01))
+#define RFCOMM_CR(b)			(((b) & 0x02) >> 1)
+#define RFCOMM_PF(b)			(((b) & 0x10) >> 4)
+
+#define RFCOMM_SRVCHANNEL(dlci)		((dlci) >> 1)
+  
+#define RFCOMM_MKADDRESS(cr, dlci) \
+	((((dlci) & 0x3f) << 2) | ((cr) << 1) | 0x01)
+
+#define RFCOMM_MKCONTROL(type, pf)	((((type) & 0xef) | ((pf) << 4)))
+#define RFCOMM_MKDLCI(dir, channel)	((((channel) & 0x1f) << 1) | (dir))
+
+#define RFCOMM_MKLEN8(len)		(((len) << 1) | 1)
+#define RFCOMM_MKLEN16(len)		((len) << 1)
+
+/* RFCOMM MCC macros */
+#define RFCOMM_MCC_TYPE(b)		(((b) & 0xfc) >> 2)
+#define RFCOMM_MCC_LENGTH(b)		(((b) & 0xfe) >> 1)
+#define RFCOMM_MKMCC_TYPE(cr, type)	((((type) << 2) | ((cr) << 1) | 0x01))
+   
+/* RPN macros */
+#define RFCOMM_RPN_DATA_BITS(line)	((line) & 0x3)
+#define RFCOMM_RPN_STOP_BITS(line)	(((line) >> 2) & 0x1)
+#define RFCOMM_RPN_PARITY(line)		(((line) >> 3) & 0x3)
+#define RFCOMM_MKRPN_LINE_SETTINGS(data, stop, parity) \
+	(((data) & 0x3) | (((stop) & 0x1) << 2) | (((parity) & 0x3) << 3))
+
+/*****************************************************************************
+ *****************************************************************************
+ **                      SOCK_STREAM RFCOMM sockets                         **
+ *****************************************************************************
+ *****************************************************************************/
+
+#define NG_BTSOCKET_RFCOMM_SENDSPACE \
+	(RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10)
+#define NG_BTSOCKET_RFCOMM_RECVSPACE \
+	(RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10)
+
+/*
+ * Bluetooth RFCOMM session. One L2CAP connection == one RFCOMM session
+ */
+
+struct ng_btsocket_rfcomm_pcb;
+struct ng_btsocket_rfcomm_session;
+
+struct ng_btsocket_rfcomm_session {
+	struct socket				*l2so;	 /* L2CAP socket */
+
+	u_int16_t				 state;  /* session state */
+#define NG_BTSOCKET_RFCOMM_SESSION_CLOSED	 0
+#define NG_BTSOCKET_RFCOMM_SESSION_LISTENING	 1
+#define NG_BTSOCKET_RFCOMM_SESSION_CONNECTING	 2 
+#define NG_BTSOCKET_RFCOMM_SESSION_CONNECTED	 3
+#define NG_BTSOCKET_RFCOMM_SESSION_OPEN		 4
+#define NG_BTSOCKET_RFCOMM_SESSION_DISCONNECTING 5
+
+	u_int16_t				 flags;  /* session flags */
+#define NG_BTSOCKET_RFCOMM_SESSION_INITIATOR	(1 << 0) /* initiator */
+#define NG_BTSOCKET_RFCOMM_SESSION_LFC		(1 << 1) /* local flow */
+#define NG_BTSOCKET_RFCOMM_SESSION_RFC		(1 << 2) /* remote flow */
+
+#define INITIATOR(s) \
+	(((s)->flags & NG_BTSOCKET_RFCOMM_SESSION_INITIATOR)? 1 : 0)
+
+	u_int16_t				 mtu;    /* default MTU */
+	struct ng_bt_mbufq			 outq;   /* outgoing queue */
+
+	struct mtx				 session_mtx; /* session lock */
+	LIST_HEAD(, ng_btsocket_rfcomm_pcb)	 dlcs;	 /* active DLC */
+
+	LIST_ENTRY(ng_btsocket_rfcomm_session)	 next;	 /* link to next */
+};
+typedef struct ng_btsocket_rfcomm_session	ng_btsocket_rfcomm_session_t;
+typedef struct ng_btsocket_rfcomm_session *	ng_btsocket_rfcomm_session_p;
+
+/*
+ * Bluetooth RFCOMM socket PCB (DLC)
+ */
+
+struct ng_btsocket_rfcomm_pcb {
+	struct socket				*so;	  /* RFCOMM socket */
+	struct ng_btsocket_rfcomm_session	*session; /* RFCOMM session */
+
+	u_int16_t				 flags;   /* DLC flags */
+#define NG_BTSOCKET_RFCOMM_DLC_TIMO		(1 << 0)  /* timeout pending */
+#define NG_BTSOCKET_RFCOMM_DLC_CFC		(1 << 1)  /* credit flow ctrl */
+#define NG_BTSOCKET_RFCOMM_DLC_TIMEDOUT		(1 << 2)  /* timeout happend */
+#define NG_BTSOCKET_RFCOMM_DLC_DETACHED		(1 << 3)  /* DLC detached */
+#define NG_BTSOCKET_RFCOMM_DLC_SENDING		(1 << 4)  /* send pending */
+
+	u_int16_t				 state;   /* DLC state */
+#define NG_BTSOCKET_RFCOMM_DLC_CLOSED		0
+#define NG_BTSOCKET_RFCOMM_DLC_W4_CONNECT	1
+#define NG_BTSOCKET_RFCOMM_DLC_CONFIGURING	2
+#define NG_BTSOCKET_RFCOMM_DLC_CONNECTING	3
+#define NG_BTSOCKET_RFCOMM_DLC_CONNECTED	4
+#define NG_BTSOCKET_RFCOMM_DLC_DISCONNECTING	5
+
+	bdaddr_t				 src;     /* source address */
+	bdaddr_t				 dst;     /* dest. address */
+
+	u_int8_t				 channel; /* RFCOMM channel */
+	u_int8_t				 dlci;    /* RFCOMM DLCI */
+
+	u_int8_t				 lmodem;  /* local mdm signls */
+	u_int8_t				 rmodem;  /* remote -/- */
+
+	u_int16_t				 mtu;	  /* MTU */
+	int16_t					 rx_cred; /* RX credits */
+	int16_t					 tx_cred; /* TX credits */
+
+	struct mtx				 pcb_mtx; /* PCB lock */
+	struct callout_handle			 timo;    /* timeout */
+
+	LIST_ENTRY(ng_btsocket_rfcomm_pcb)	 session_next;/* link to next */
+	LIST_ENTRY(ng_btsocket_rfcomm_pcb)	 next;	  /* link to next */
+};
+typedef struct ng_btsocket_rfcomm_pcb	ng_btsocket_rfcomm_pcb_t;
+typedef struct ng_btsocket_rfcomm_pcb *	ng_btsocket_rfcomm_pcb_p;
+
+#define	so2rfcomm_pcb(so) \
+	((struct ng_btsocket_rfcomm_pcb *)((so)->so_pcb))
+
+/*
+ * Bluetooth RFCOMM socket methods
+ */
+
+#ifdef _KERNEL
+
+void ng_btsocket_rfcomm_init       (void);
+int  ng_btsocket_rfcomm_abort      (struct socket *);
+int  ng_btsocket_rfcomm_accept     (struct socket *, struct sockaddr **);
+int  ng_btsocket_rfcomm_attach     (struct socket *, int, struct thread *);
+int  ng_btsocket_rfcomm_bind       (struct socket *, struct sockaddr *,
+                                    struct thread *);
+int  ng_btsocket_rfcomm_connect    (struct socket *, struct sockaddr *,
+                                    struct thread *);
+int  ng_btsocket_rfcomm_control    (struct socket *, u_long, caddr_t,
+                                    struct ifnet *, struct thread *);
+int  ng_btsocket_rfcomm_ctloutput  (struct socket *, struct sockopt *);
+int  ng_btsocket_rfcomm_detach     (struct socket *);
+int  ng_btsocket_rfcomm_disconnect (struct socket *);
+int  ng_btsocket_rfcomm_listen     (struct socket *, struct thread *);
+int  ng_btsocket_rfcomm_peeraddr   (struct socket *, struct sockaddr **);
+int  ng_btsocket_rfcomm_send       (struct socket *, int, struct mbuf *,
+                                    struct sockaddr *, struct mbuf *,
+                                    struct thread *);
+int  ng_btsocket_rfcomm_sockaddr   (struct socket *, struct sockaddr **);
+
+#endif /* _KERNEL */
+
+#endif /* _NETGRAPH_BTSOCKET_RFCOMM_H_ */