NetBSD/sys/netbt/sco_socket.c

507 lines
10 KiB
C

/* $NetBSD: sco_socket.c,v 1.38 2019/01/28 12:53:01 martin 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 1.38 2019/01/28 12:53:01 martin 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;
static int
sco_attach(struct socket *so, int proto)
{
int error;
KASSERT(so->so_pcb == NULL);
if (so->so_lock == NULL) {
mutex_obj_hold(bt_lock);
so->so_lock = bt_lock;
solock(so);
}
KASSERT(solocked(so));
error = soreserve(so, sco_sendspace, sco_recvspace);
if (error) {
return error;
}
return sco_attach_pcb((struct sco_pcb **)&so->so_pcb, &sco_proto, so);
}
static void
sco_detach(struct socket *so)
{
KASSERT(so->so_pcb != NULL);
sco_detach_pcb((struct sco_pcb **)&so->so_pcb);
KASSERT(so->so_pcb == NULL);
}
static int
sco_accept(struct socket *so, struct sockaddr *nam)
{
struct sco_pcb *pcb = so->so_pcb;
KASSERT(solocked(so));
KASSERT(nam != NULL);
if (pcb == NULL)
return EINVAL;
return sco_peeraddr_pcb(pcb, (struct sockaddr_bt *)nam);
}
static int
sco_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
{
struct sco_pcb *pcb = so->so_pcb;
struct sockaddr_bt *sa = (struct sockaddr_bt *)nam;
KASSERT(solocked(so));
KASSERT(nam != NULL);
if (pcb == NULL)
return EINVAL;
if (sa->bt_len != sizeof(struct sockaddr_bt))
return EINVAL;
if (sa->bt_family != AF_BLUETOOTH)
return EAFNOSUPPORT;
return sco_bind_pcb(pcb, sa);
}
static int
sco_listen(struct socket *so, struct lwp *l)
{
struct sco_pcb *pcb = so->so_pcb;
KASSERT(solocked(so));
if (pcb == NULL)
return EINVAL;
return sco_listen_pcb(pcb);
}
static int
sco_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
{
struct sco_pcb *pcb = so->so_pcb;
struct sockaddr_bt *sa = (struct sockaddr_bt *)nam;
KASSERT(solocked(so));
KASSERT(nam != NULL);
if (pcb == NULL)
return EINVAL;
if (sa->bt_len != sizeof(struct sockaddr_bt))
return EINVAL;
if (sa->bt_family != AF_BLUETOOTH)
return EAFNOSUPPORT;
soisconnecting(so);
return sco_connect_pcb(pcb, sa);
}
static int
sco_connect2(struct socket *so, struct socket *so2)
{
struct sco_pcb *pcb = so->so_pcb;
KASSERT(solocked(so));
if (pcb == NULL)
return EINVAL;
return EOPNOTSUPP;
}
static int
sco_disconnect(struct socket *so)
{
struct sco_pcb *pcb = so->so_pcb;
KASSERT(solocked(so));
if (pcb == NULL)
return EINVAL;
soisdisconnecting(so);
return sco_disconnect_pcb(pcb, so->so_linger);
}
static int
sco_shutdown(struct socket *so)
{
KASSERT(solocked(so));
socantsendmore(so);
return 0;
}
static int
sco_abort(struct socket *so)
{
struct sco_pcb *pcb = so->so_pcb;
KASSERT(solocked(so));
if (pcb == NULL)
return EINVAL;
sco_disconnect_pcb(pcb, 0);
soisdisconnected(so);
sco_detach(so);
return 0;
}
static int
sco_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
{
return EOPNOTSUPP;
}
static int
sco_stat(struct socket *so, struct stat *ub)
{
KASSERT(solocked(so));
return 0;
}
static int
sco_peeraddr(struct socket *so, struct sockaddr *nam)
{
struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
KASSERT(solocked(so));
KASSERT(pcb != NULL);
KASSERT(nam != NULL);
return sco_peeraddr_pcb(pcb, (struct sockaddr_bt *)nam);
}
static int
sco_sockaddr(struct socket *so, struct sockaddr *nam)
{
struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
KASSERT(solocked(so));
KASSERT(pcb != NULL);
KASSERT(nam != NULL);
return sco_sockaddr_pcb(pcb, (struct sockaddr_bt *)nam);
}
static int
sco_rcvd(struct socket *so, int flags, struct lwp *l)
{
KASSERT(solocked(so));
return EOPNOTSUPP;
}
static int
sco_recvoob(struct socket *so, struct mbuf *m, int flags)
{
KASSERT(solocked(so));
return EOPNOTSUPP;
}
static int
sco_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
struct mbuf *control, struct lwp *l)
{
struct sco_pcb *pcb = so->so_pcb;
int err = 0;
struct mbuf *m0;
KASSERT(solocked(so));
KASSERT(m != NULL);
if (control) /* no use for that */
m_freem(control);
if (pcb == NULL) {
err = EINVAL;
goto release;
}
if (m->m_pkthdr.len == 0)
goto release;
if (m->m_pkthdr.len > pcb->sp_mtu) {
err = EMSGSIZE;
goto release;
}
m0 = m_copypacket(m, M_DONTWAIT);
if (m0 == NULL) {
err = ENOMEM;
goto release;
}
sbappendrecord(&so->so_snd, m);
return sco_send_pcb(pcb, m0);
release:
m_freem(m);
return err;
}
static int
sco_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
{
KASSERT(solocked(so));
m_freem(m);
m_freem(control);
return EOPNOTSUPP;
}
static int
sco_purgeif(struct socket *so, struct ifnet *ifp)
{
return EOPNOTSUPP;
}
/*
* 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;
DPRINTF("New Connection\n");
so = sonewconn(so, false);
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);
}
PR_WRAP_USRREQS(sco)
#define sco_attach sco_attach_wrapper
#define sco_detach sco_detach_wrapper
#define sco_accept sco_accept_wrapper
#define sco_bind sco_bind_wrapper
#define sco_listen sco_listen_wrapper
#define sco_connect sco_connect_wrapper
#define sco_connect2 sco_connect2_wrapper
#define sco_disconnect sco_disconnect_wrapper
#define sco_shutdown sco_shutdown_wrapper
#define sco_abort sco_abort_wrapper
#define sco_ioctl sco_ioctl_wrapper
#define sco_stat sco_stat_wrapper
#define sco_peeraddr sco_peeraddr_wrapper
#define sco_sockaddr sco_sockaddr_wrapper
#define sco_rcvd sco_rcvd_wrapper
#define sco_recvoob sco_recvoob_wrapper
#define sco_send sco_send_wrapper
#define sco_sendoob sco_sendoob_wrapper
#define sco_purgeif sco_purgeif_wrapper
const struct pr_usrreqs sco_usrreqs = {
.pr_attach = sco_attach,
.pr_detach = sco_detach,
.pr_accept = sco_accept,
.pr_bind = sco_bind,
.pr_listen = sco_listen,
.pr_connect = sco_connect,
.pr_connect2 = sco_connect2,
.pr_disconnect = sco_disconnect,
.pr_shutdown = sco_shutdown,
.pr_abort = sco_abort,
.pr_ioctl = sco_ioctl,
.pr_stat = sco_stat,
.pr_peeraddr = sco_peeraddr,
.pr_sockaddr = sco_sockaddr,
.pr_rcvd = sco_rcvd,
.pr_recvoob = sco_recvoob,
.pr_send = sco_send,
.pr_sendoob = sco_sendoob,
.pr_purgeif = sco_purgeif,
};