NetBSD/sys/netbt/sco_socket.c

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/* $NetBSD: sco_socket.c,v 1.11 2008/08/06 15:01:24 plunky Exp $ */
/*-
* Copyright (c) 2006 Itronix Inc.
* 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.
* 3. The name of Itronix Inc. may not be used to endorse
* or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``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 ITRONIX INC. 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sco_socket.c,v 1.11 2008/08/06 15:01:24 plunky Exp $");
/* load symbolic names */
#ifdef BLUETOOTH_DEBUG
#define PRUREQUESTS
#define PRCOREQUESTS
#endif
#include <sys/param.h>
#include <sys/domain.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/systm.h>
#include <netbt/bluetooth.h>
#include <netbt/hci.h>
#include <netbt/sco.h>
/*******************************************************************************
*
* SCO SOCK_SEQPACKET sockets - low latency audio data
*/
static void sco_connecting(void *);
static void sco_connected(void *);
static void sco_disconnected(void *, int);
static void *sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *);
static void sco_complete(void *, int);
static void sco_linkmode(void *, int);
static void sco_input(void *, struct mbuf *);
static const struct btproto sco_proto = {
sco_connecting,
sco_connected,
sco_disconnected,
sco_newconn,
sco_complete,
sco_linkmode,
sco_input,
};
int sco_sendspace = 4096;
int sco_recvspace = 4096;
/*
* User Request.
* up is socket
* m is either
* optional mbuf chain containing message
* ioctl command (PRU_CONTROL)
* nam is either
* optional mbuf chain containing an address
* ioctl data (PRU_CONTROL)
* optionally, protocol number (PRU_ATTACH)
* ctl is optional mbuf chain containing socket options
* l is pointer to process requesting action (if any)
*
* we are responsible for disposing of m and ctl if
* they are mbuf chains
*/
int
sco_usrreq(struct socket *up, int req, struct mbuf *m,
struct mbuf *nam, struct mbuf *ctl, struct lwp *l)
{
struct sco_pcb *pcb = (struct sco_pcb *)up->so_pcb;
struct sockaddr_bt *sa;
struct mbuf *m0;
int err = 0;
DPRINTFN(2, "%s\n", prurequests[req]);
switch(req) {
case PRU_CONTROL:
return EOPNOTSUPP;
case PRU_PURGEIF:
return EOPNOTSUPP;
case PRU_ATTACH:
if (up->so_lock == NULL) {
mutex_obj_hold(bt_lock);
up->so_lock = bt_lock;
solock(up);
}
KASSERT(solocked(up));
if (pcb)
return EINVAL;
err = soreserve(up, sco_sendspace, sco_recvspace);
if (err)
return err;
return sco_attach((struct sco_pcb **)&up->so_pcb,
&sco_proto, up);
}
/* anything after here *requires* a pcb */
if (pcb == NULL) {
err = EINVAL;
goto release;
}
switch(req) {
case PRU_DISCONNECT:
soisdisconnecting(up);
return sco_disconnect(pcb, up->so_linger);
case PRU_ABORT:
sco_disconnect(pcb, 0);
soisdisconnected(up);
/* fall through to */
case PRU_DETACH:
return sco_detach((struct sco_pcb **)&up->so_pcb);
case PRU_BIND:
KASSERT(nam != NULL);
sa = mtod(nam, struct sockaddr_bt *);
if (sa->bt_len != sizeof(struct sockaddr_bt))
return EINVAL;
if (sa->bt_family != AF_BLUETOOTH)
return EAFNOSUPPORT;
return sco_bind(pcb, sa);
case PRU_CONNECT:
KASSERT(nam != NULL);
sa = mtod(nam, struct sockaddr_bt *);
if (sa->bt_len != sizeof(struct sockaddr_bt))
return EINVAL;
if (sa->bt_family != AF_BLUETOOTH)
return EAFNOSUPPORT;
soisconnecting(up);
return sco_connect(pcb, sa);
case PRU_PEERADDR:
KASSERT(nam != NULL);
sa = mtod(nam, struct sockaddr_bt *);
nam->m_len = sizeof(struct sockaddr_bt);
return sco_peeraddr(pcb, sa);
case PRU_SOCKADDR:
KASSERT(nam != NULL);
sa = mtod(nam, struct sockaddr_bt *);
nam->m_len = sizeof(struct sockaddr_bt);
return sco_sockaddr(pcb, sa);
case PRU_SHUTDOWN:
socantsendmore(up);
break;
case PRU_SEND:
KASSERT(m != NULL);
if (m->m_pkthdr.len == 0)
break;
if (m->m_pkthdr.len > pcb->sp_mtu) {
err = EMSGSIZE;
break;
}
m0 = m_copypacket(m, M_DONTWAIT);
if (m0 == NULL) {
err = ENOMEM;
break;
}
if (ctl) /* no use for that */
m_freem(ctl);
sbappendrecord(&up->so_snd, m);
return sco_send(pcb, m0);
case PRU_SENSE:
return 0; /* (no sense - Doh!) */
case PRU_RCVD:
case PRU_RCVOOB:
return EOPNOTSUPP; /* (no release) */
case PRU_LISTEN:
return sco_listen(pcb);
case PRU_ACCEPT:
KASSERT(nam != NULL);
sa = mtod(nam, struct sockaddr_bt *);
nam->m_len = sizeof(struct sockaddr_bt);
return sco_peeraddr(pcb, sa);
case PRU_CONNECT2:
case PRU_SENDOOB:
case PRU_FASTTIMO:
case PRU_SLOWTIMO:
case PRU_PROTORCV:
case PRU_PROTOSEND:
err = EOPNOTSUPP;
break;
default:
UNKNOWN(req);
err = EOPNOTSUPP;
break;
}
release:
if (m) m_freem(m);
if (ctl) m_freem(ctl);
return err;
}
/*
* get/set socket options
*/
int
sco_ctloutput(int req, struct socket *so, struct sockopt *sopt)
{
struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
int err = 0;
DPRINTFN(2, "req %s\n", prcorequests[req]);
if (pcb == NULL)
return EINVAL;
if (sopt->sopt_level != BTPROTO_SCO)
return ENOPROTOOPT;
switch(req) {
case PRCO_GETOPT:
err = sco_getopt(pcb, sopt);
break;
case PRCO_SETOPT:
err = sco_setopt(pcb, sopt);
break;
default:
err = ENOPROTOOPT;
break;
}
return err;
}
/*****************************************************************************
*
* SCO Protocol socket callbacks
*
*/
static void
sco_connecting(void *arg)
{
struct socket *so = arg;
DPRINTF("Connecting\n");
soisconnecting(so);
}
static void
sco_connected(void *arg)
{
struct socket *so = arg;
DPRINTF("Connected\n");
soisconnected(so);
}
static void
sco_disconnected(void *arg, int err)
{
struct socket *so = arg;
DPRINTF("Disconnected (%d)\n", err);
so->so_error = err;
soisdisconnected(so);
}
static void *
sco_newconn(void *arg, struct sockaddr_bt *laddr,
struct sockaddr_bt *raddr)
{
struct socket *so = arg;
2006-08-28 12:19:53 +04:00
DPRINTF("New Connection\n");
so = sonewconn(so, 0);
if (so == NULL)
return NULL;
soisconnecting(so);
return so->so_pcb;
}
static void
sco_complete(void *arg, int num)
{
struct socket *so = arg;
while (num-- > 0)
sbdroprecord(&so->so_snd);
sowwakeup(so);
}
static void
sco_linkmode(void *arg, int mode)
{
}
static void
sco_input(void *arg, struct mbuf *m)
{
struct socket *so = arg;
/*
* since this data is time sensitive, if the buffer
* is full we just dump data until the latest one
* will fit.
*/
while (m->m_pkthdr.len > sbspace(&so->so_rcv))
sbdroprecord(&so->so_rcv);
DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len);
sbappendrecord(&so->so_rcv, m);
sorwakeup(so);
}