FreeBSD/Linux Kernel Cross Reference
sys/netgraph/bluetooth/include/ng_btsocket_rfcomm.h

     /*
      * ng_btsocket_rfcomm.h
      */
     
     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * 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: ng_btsocket_rfcomm.h,v 1.10 2003/03/29 22:27:42 max Exp $
     * $FreeBSD$
     */
    
    #ifndef _NETGRAPH_BTSOCKET_RFCOMM_H_
    #define _NETGRAPH_BTSOCKET_RFCOMM_H_
    
    /*****************************************************************************
     *****************************************************************************
     **                              RFCOMM                                     **
     *****************************************************************************
     *****************************************************************************/
    
    /* XXX FIXME this does not belong here */
    
    #define RFCOMM_DEFAULT_MTU              667
    #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 /* Incoming 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               0x2
    #define RFCOMM_RPN_DATA_7               0x1
    #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 * 2)
   #define NG_BTSOCKET_RFCOMM_RECVSPACE \
           (RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 2)
   
   /*
    * 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 happened */
   #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                           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_abort      (struct socket *);
   void ng_btsocket_rfcomm_close      (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, void *,
                                       struct ifnet *, struct thread *);
   int  ng_btsocket_rfcomm_ctloutput  (struct socket *, struct sockopt *);
   void ng_btsocket_rfcomm_detach     (struct socket *);
   int  ng_btsocket_rfcomm_disconnect (struct socket *);
   int  ng_btsocket_rfcomm_listen     (struct socket *, int, 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_ */

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