/*
 * ng_btsocket.c
 */

/*-
 * Copyright (c) 2001-2002 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.c,v 1.4 2003/09/14 23:29:06 max Exp $
 * $FreeBSD: src/sys/netgraph/bluetooth/socket/ng_btsocket.c,v 1.13 2006/07/21 17:11:13 rwatson Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bitstring.h>
#include <sys/errno.h>
#include <sys/domain.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <netgraph7/ng_message.h>
#include <netgraph7/netgraph.h>
#include <netgraph7/bluetooth/include/ng_bluetooth.h>
#include <netgraph7/bluetooth/include/ng_hci.h>
#include <netgraph7/bluetooth/include/ng_l2cap.h>
#include <netgraph7/bluetooth/include/ng_btsocket.h>
#include <netgraph7/bluetooth/include/ng_btsocket_hci_raw.h>
#include <netgraph7/bluetooth/include/ng_btsocket_l2cap.h>
#include <netgraph7/bluetooth/include/ng_btsocket_rfcomm.h>

static int                      ng_btsocket_modevent (module_t, int, void *);
extern struct domain            ng_btsocket_domain;

/*
 * Bluetooth raw HCI sockets
 */

static struct pr_usrreqs        ng_btsocket_hci_raw_usrreqs = {
        .pru_abort =            ng_btsocket_hci_raw_abort,
        .pru_attach =           ng_btsocket_hci_raw_attach,
        .pru_bind =             ng_btsocket_hci_raw_bind,
        .pru_connect =          ng_btsocket_hci_raw_connect,
        .pru_control =          ng_btsocket_hci_raw_control,
        .pru_detach =           ng_btsocket_hci_raw_detach,
        .pru_disconnect =       ng_btsocket_hci_raw_disconnect,
        .pru_peeraddr =         ng_btsocket_hci_raw_peeraddr,
        .pru_send =             ng_btsocket_hci_raw_send,
        .pru_shutdown =         NULL,
        .pru_sockaddr =         ng_btsocket_hci_raw_sockaddr,
#if 0 /* XXX */
        .pru_close =            ng_btsocket_hci_raw_close,
#endif
        .pru_sosend =           sosend,
        .pru_soreceive =        soreceive,
};

/*
 * Bluetooth raw L2CAP sockets
 */

static struct pr_usrreqs        ng_btsocket_l2cap_raw_usrreqs = {
        .pru_abort =            ng_btsocket_l2cap_raw_abort,
        .pru_attach =           ng_btsocket_l2cap_raw_attach,
        .pru_bind =             ng_btsocket_l2cap_raw_bind,
        .pru_connect =          ng_btsocket_l2cap_raw_connect,
        .pru_control =          ng_btsocket_l2cap_raw_control,
        .pru_detach =           ng_btsocket_l2cap_raw_detach,
        .pru_disconnect =       ng_btsocket_l2cap_raw_disconnect,
        .pru_peeraddr =         ng_btsocket_l2cap_raw_peeraddr,
        .pru_send =             ng_btsocket_l2cap_raw_send,
        .pru_shutdown =         NULL,
        .pru_sockaddr =         ng_btsocket_l2cap_raw_sockaddr,
#if 0 /* XXX */
        .pru_close =            ng_btsocket_l2cap_raw_close,
#endif
        .pru_sosend =           sosend,
        .pru_soreceive =        soreceive,
};

/*
 * Bluetooth SEQPACKET L2CAP sockets
 */

static struct pr_usrreqs        ng_btsocket_l2cap_usrreqs = {
        .pru_abort =            ng_btsocket_l2cap_abort,
        .pru_accept =           ng_btsocket_l2cap_accept,
        .pru_attach =           ng_btsocket_l2cap_attach,
        .pru_bind =             ng_btsocket_l2cap_bind,
        .pru_connect =          ng_btsocket_l2cap_connect,
        .pru_control =          ng_btsocket_l2cap_control,
        .pru_detach =           ng_btsocket_l2cap_detach,
        .pru_disconnect =       ng_btsocket_l2cap_disconnect,
        .pru_listen =           ng_btsocket_l2cap_listen,
        .pru_peeraddr =         ng_btsocket_l2cap_peeraddr,
        .pru_send =             ng_btsocket_l2cap_send,
        .pru_shutdown =         NULL,
        .pru_sockaddr =         ng_btsocket_l2cap_sockaddr,
#if 0 /* XXX */
        .pru_close =            ng_btsocket_l2cap_close,
#endif
        .pru_sosend =           sosend,
        .pru_soreceive =        soreceive,
};

/*
 * Bluetooth STREAM RFCOMM sockets
 */

static struct pr_usrreqs        ng_btsocket_rfcomm_usrreqs = {
        .pru_abort =            ng_btsocket_rfcomm_abort,
        .pru_accept =           ng_btsocket_rfcomm_accept,
        .pru_attach =           ng_btsocket_rfcomm_attach,
        .pru_bind =             ng_btsocket_rfcomm_bind,
        .pru_connect =          ng_btsocket_rfcomm_connect,
        .pru_control =          ng_btsocket_rfcomm_control,
        .pru_detach =           ng_btsocket_rfcomm_detach,
        .pru_disconnect =       ng_btsocket_rfcomm_disconnect,
        .pru_listen =           ng_btsocket_rfcomm_listen,
        .pru_peeraddr =         ng_btsocket_rfcomm_peeraddr,
        .pru_send =             ng_btsocket_rfcomm_send,
        .pru_shutdown =         NULL,
        .pru_sockaddr =         ng_btsocket_rfcomm_sockaddr,
#if 0 /* XXX */
        .pru_close =            ng_btsocket_rfcomm_close,
#endif
        .pru_sosend =           sosend,
        .pru_soreceive =        soreceive,
};

/* 
 * Definitions of protocols supported in the BLUETOOTH domain 
 */

static struct protosw           ng_btsocket_protosw[] = {
{
        .pr_type =              SOCK_RAW,
        .pr_domain =            &ng_btsocket_domain,
        .pr_protocol =          BLUETOOTH_PROTO_HCI,
        .pr_flags =             PR_ATOMIC|PR_ADDR,
        .pr_ctloutput =         ng_btsocket_hci_raw_ctloutput,
        .pr_init =              ng_btsocket_hci_raw_init,
        .pr_usrreqs =           &ng_btsocket_hci_raw_usrreqs,
},
{
        .pr_type =              SOCK_RAW,
        .pr_domain =            &ng_btsocket_domain,
        .pr_protocol =          BLUETOOTH_PROTO_L2CAP,
        .pr_flags =             PR_ATOMIC|PR_ADDR,
        .pr_init =              ng_btsocket_l2cap_raw_init,
        .pr_usrreqs =           &ng_btsocket_l2cap_raw_usrreqs,
},
{
        .pr_type =              SOCK_SEQPACKET,
        .pr_domain =            &ng_btsocket_domain,
        .pr_protocol =          BLUETOOTH_PROTO_L2CAP,
        .pr_flags =             PR_ATOMIC|PR_CONNREQUIRED,
        .pr_ctloutput =         ng_btsocket_l2cap_ctloutput,
        .pr_init =              ng_btsocket_l2cap_init,
        .pr_usrreqs =           &ng_btsocket_l2cap_usrreqs,
},
{
        .pr_type =              SOCK_STREAM,
        .pr_domain =            &ng_btsocket_domain,
        .pr_protocol =          BLUETOOTH_PROTO_RFCOMM,
        .pr_flags =             PR_CONNREQUIRED,
        .pr_ctloutput =         ng_btsocket_rfcomm_ctloutput,
        .pr_init =              ng_btsocket_rfcomm_init,
        .pr_usrreqs =           &ng_btsocket_rfcomm_usrreqs,
}
};
#define ng_btsocket_protosw_size NELEM(ng_btsocket_protosw)
#define ng_btsocket_protosw_end \
        &ng_btsocket_protosw[ng_btsocket_protosw_size]

/*
 * BLUETOOTH domain
 */

struct domain                   ng_btsocket_domain = {
        .dom_family =           AF_BLUETOOTH,
        .dom_name =             "bluetooth",
        .dom_protosw =          ng_btsocket_protosw,
        .dom_protoswNPROTOSW =  ng_btsocket_protosw_end
};

/* 
 * Socket sysctl tree 
 */

SYSCTL_NODE(_net_bluetooth_hci, OID_AUTO, sockets, CTLFLAG_RW,
        0, "Bluetooth HCI sockets family");
SYSCTL_NODE(_net_bluetooth_l2cap, OID_AUTO, sockets, CTLFLAG_RW,
        0, "Bluetooth L2CAP sockets family");
SYSCTL_NODE(_net_bluetooth_rfcomm, OID_AUTO, sockets, CTLFLAG_RW,
        0, "Bluetooth RFCOMM sockets family");

/* 
 * Module 
 */

static moduledata_t     ng_btsocket_mod = {
        "ng_btsocket",
        ng_btsocket_modevent,
        NULL
};

DECLARE_MODULE(ng_btsocket, ng_btsocket_mod, SI_SUB_PROTO_DOMAIN,
        SI_ORDER_ANY);
MODULE_VERSION(ng_btsocket, NG_BLUETOOTH_VERSION);
MODULE_DEPEND(ng_btsocket, ng_bluetooth, NG_BLUETOOTH_VERSION,
        NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
MODULE_DEPEND(ng_btsocket, netgraph, NG_ABI_VERSION,
        NG_ABI_VERSION, NG_ABI_VERSION);

/*
 * Handle loading and unloading for this node type.
 * This is to handle auxiliary linkages (e.g protocol domain addition).
 */

static int  
ng_btsocket_modevent(module_t mod, int event, void *data)
{
        int     error = 0;
        
        switch (event) {
        case MOD_LOAD:
                net_add_domain(&ng_btsocket_domain);
                break;

        case MOD_UNLOAD:
                /* XXX can't unload protocol domain yet */
                error = EBUSY;
                break;

        default:
                error = EOPNOTSUPP;
                break;
        }

        return (error);
} /* ng_btsocket_modevent */