587 lines
12 KiB
C
587 lines
12 KiB
C
/* $NetBSD: sco_socket.c,v 1.33 2014/08/09 05:33:01 rtr Exp $ */
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/*-
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* Copyright (c) 2006 Itronix Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of Itronix Inc. may not be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: sco_socket.c,v 1.33 2014/08/09 05:33:01 rtr Exp $");
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/* load symbolic names */
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#ifdef BLUETOOTH_DEBUG
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#define PRUREQUESTS
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#define PRCOREQUESTS
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#endif
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#include <sys/param.h>
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#include <sys/domain.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/systm.h>
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#include <netbt/bluetooth.h>
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#include <netbt/hci.h>
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#include <netbt/sco.h>
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/*******************************************************************************
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*
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* SCO SOCK_SEQPACKET sockets - low latency audio data
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*/
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static void sco_connecting(void *);
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static void sco_connected(void *);
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static void sco_disconnected(void *, int);
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static void *sco_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *);
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static void sco_complete(void *, int);
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static void sco_linkmode(void *, int);
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static void sco_input(void *, struct mbuf *);
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static const struct btproto sco_proto = {
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sco_connecting,
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sco_connected,
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sco_disconnected,
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sco_newconn,
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sco_complete,
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sco_linkmode,
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sco_input,
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};
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int sco_sendspace = 4096;
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int sco_recvspace = 4096;
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static int
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sco_attach(struct socket *so, int proto)
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{
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int error;
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KASSERT(so->so_pcb == NULL);
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if (so->so_lock == NULL) {
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mutex_obj_hold(bt_lock);
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so->so_lock = bt_lock;
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solock(so);
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}
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KASSERT(solocked(so));
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error = soreserve(so, sco_sendspace, sco_recvspace);
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if (error) {
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return error;
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}
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return sco_attach_pcb((struct sco_pcb **)&so->so_pcb, &sco_proto, so);
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}
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static void
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sco_detach(struct socket *so)
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{
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KASSERT(so->so_pcb != NULL);
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sco_detach_pcb((struct sco_pcb **)&so->so_pcb);
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KASSERT(so->so_pcb == NULL);
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}
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static int
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sco_accept(struct socket *so, struct mbuf *nam)
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{
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struct sco_pcb *pcb = so->so_pcb;
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struct sockaddr_bt *sa;
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KASSERT(solocked(so));
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KASSERT(nam != NULL);
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if (pcb == NULL)
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return EINVAL;
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sa = mtod(nam, struct sockaddr_bt *);
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nam->m_len = sizeof(struct sockaddr_bt);
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return sco_peeraddr_pcb(pcb, sa);
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}
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static int
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sco_bind(struct socket *so, struct mbuf *nam, struct lwp *l)
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{
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struct sco_pcb *pcb = so->so_pcb;
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struct sockaddr_bt *sa;
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KASSERT(solocked(so));
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KASSERT(nam != NULL);
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if (pcb == NULL)
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return EINVAL;
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sa = mtod(nam, struct sockaddr_bt *);
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if (sa->bt_len != sizeof(struct sockaddr_bt))
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return EINVAL;
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if (sa->bt_family != AF_BLUETOOTH)
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return EAFNOSUPPORT;
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return sco_bind_pcb(pcb, sa);
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}
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static int
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sco_listen(struct socket *so, struct lwp *l)
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{
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struct sco_pcb *pcb = so->so_pcb;
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KASSERT(solocked(so));
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if (pcb == NULL)
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return EINVAL;
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return sco_listen_pcb(pcb);
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}
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static int
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sco_connect(struct socket *so, struct mbuf *nam, struct lwp *l)
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{
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struct sco_pcb *pcb = so->so_pcb;
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struct sockaddr_bt *sa;
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KASSERT(solocked(so));
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KASSERT(nam != NULL);
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if (pcb == NULL)
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return EINVAL;
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sa = mtod(nam, struct sockaddr_bt *);
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if (sa->bt_len != sizeof(struct sockaddr_bt))
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return EINVAL;
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if (sa->bt_family != AF_BLUETOOTH)
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return EAFNOSUPPORT;
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soisconnecting(so);
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return sco_connect_pcb(pcb, sa);
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}
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static int
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sco_connect2(struct socket *so, struct socket *so2)
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{
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struct sco_pcb *pcb = so->so_pcb;
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KASSERT(solocked(so));
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if (pcb == NULL)
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return EINVAL;
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return EOPNOTSUPP;
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}
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static int
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sco_disconnect(struct socket *so)
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{
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struct sco_pcb *pcb = so->so_pcb;
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KASSERT(solocked(so));
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if (pcb == NULL)
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return EINVAL;
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soisdisconnecting(so);
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return sco_disconnect_pcb(pcb, so->so_linger);
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}
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static int
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sco_shutdown(struct socket *so)
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{
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KASSERT(solocked(so));
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socantsendmore(so);
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return 0;
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}
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static int
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sco_abort(struct socket *so)
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{
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struct sco_pcb *pcb = so->so_pcb;
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KASSERT(solocked(so));
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if (pcb == NULL)
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return EINVAL;
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sco_disconnect_pcb(pcb, 0);
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soisdisconnected(so);
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sco_detach(so);
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return 0;
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}
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static int
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sco_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
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{
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return EOPNOTSUPP;
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}
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static int
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sco_stat(struct socket *so, struct stat *ub)
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{
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KASSERT(solocked(so));
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return 0;
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}
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static int
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sco_peeraddr(struct socket *so, struct mbuf *nam)
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{
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struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
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struct sockaddr_bt *sa;
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KASSERT(solocked(so));
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KASSERT(pcb != NULL);
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KASSERT(nam != NULL);
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sa = mtod(nam, struct sockaddr_bt *);
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nam->m_len = sizeof(struct sockaddr_bt);
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return sco_peeraddr_pcb(pcb, sa);
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}
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static int
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sco_sockaddr(struct socket *so, struct mbuf *nam)
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{
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struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
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struct sockaddr_bt *sa;
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KASSERT(solocked(so));
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KASSERT(pcb != NULL);
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KASSERT(nam != NULL);
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sa = mtod(nam, struct sockaddr_bt *);
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nam->m_len = sizeof(struct sockaddr_bt);
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return sco_sockaddr_pcb(pcb, sa);
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}
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static int
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sco_rcvd(struct socket *so, int flags, struct lwp *l)
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{
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KASSERT(solocked(so));
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return EOPNOTSUPP;
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}
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static int
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sco_recvoob(struct socket *so, struct mbuf *m, int flags)
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{
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KASSERT(solocked(so));
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return EOPNOTSUPP;
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}
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static int
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sco_send(struct socket *so, struct mbuf *m, struct mbuf *nam,
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struct mbuf *control, struct lwp *l)
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{
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struct sco_pcb *pcb = so->so_pcb;
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int err = 0;
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struct mbuf *m0;
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KASSERT(solocked(so));
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KASSERT(m != NULL);
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if (control) /* no use for that */
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m_freem(control);
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if (pcb == NULL) {
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err = EINVAL;
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goto release;
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}
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if (m->m_pkthdr.len == 0)
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goto release;
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if (m->m_pkthdr.len > pcb->sp_mtu) {
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err = EMSGSIZE;
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goto release;
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}
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m0 = m_copypacket(m, M_DONTWAIT);
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if (m0 == NULL) {
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err = ENOMEM;
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goto release;
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}
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sbappendrecord(&so->so_snd, m);
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return sco_send_pcb(pcb, m0);
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release:
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m_freem(m);
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return err;
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}
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static int
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sco_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
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{
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KASSERT(solocked(so));
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if (m)
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m_freem(m);
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if (control)
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m_freem(control);
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return EOPNOTSUPP;
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}
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static int
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sco_purgeif(struct socket *so, struct ifnet *ifp)
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{
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return EOPNOTSUPP;
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}
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/*
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* User Request.
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* up is socket
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* m is optional mbuf chain containing message
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* nam is optional mbuf chain containing an address
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* ctl is optional mbuf chain containing socket options
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* l is pointer to process requesting action (if any)
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*
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* we are responsible for disposing of m and ctl if
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* they are mbuf chains
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*/
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static int
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sco_usrreq(struct socket *up, int req, struct mbuf *m,
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struct mbuf *nam, struct mbuf *ctl, struct lwp *l)
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{
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struct sco_pcb *pcb = up->so_pcb;
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int err = 0;
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DPRINTFN(2, "%s\n", prurequests[req]);
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KASSERT(req != PRU_ATTACH);
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KASSERT(req != PRU_DETACH);
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KASSERT(req != PRU_ACCEPT);
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KASSERT(req != PRU_BIND);
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KASSERT(req != PRU_LISTEN);
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KASSERT(req != PRU_CONNECT);
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KASSERT(req != PRU_CONNECT2);
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KASSERT(req != PRU_DISCONNECT);
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KASSERT(req != PRU_SHUTDOWN);
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KASSERT(req != PRU_ABORT);
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KASSERT(req != PRU_CONTROL);
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KASSERT(req != PRU_SENSE);
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KASSERT(req != PRU_PEERADDR);
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KASSERT(req != PRU_SOCKADDR);
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KASSERT(req != PRU_RCVD);
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KASSERT(req != PRU_RCVOOB);
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KASSERT(req != PRU_SEND);
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KASSERT(req != PRU_SENDOOB);
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KASSERT(req != PRU_PURGEIF);
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/* anything after here *requires* a pcb */
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if (pcb == NULL) {
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err = EINVAL;
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goto release;
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}
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switch(req) {
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case PRU_FASTTIMO:
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case PRU_SLOWTIMO:
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case PRU_PROTORCV:
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case PRU_PROTOSEND:
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err = EOPNOTSUPP;
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break;
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default:
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UNKNOWN(req);
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err = EOPNOTSUPP;
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break;
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}
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release:
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if (m) m_freem(m);
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if (ctl) m_freem(ctl);
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return err;
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}
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/*
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* get/set socket options
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*/
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int
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sco_ctloutput(int req, struct socket *so, struct sockopt *sopt)
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{
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struct sco_pcb *pcb = (struct sco_pcb *)so->so_pcb;
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int err = 0;
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DPRINTFN(2, "req %s\n", prcorequests[req]);
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if (pcb == NULL)
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return EINVAL;
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if (sopt->sopt_level != BTPROTO_SCO)
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return ENOPROTOOPT;
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switch(req) {
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case PRCO_GETOPT:
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err = sco_getopt(pcb, sopt);
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break;
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case PRCO_SETOPT:
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err = sco_setopt(pcb, sopt);
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break;
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default:
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err = ENOPROTOOPT;
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break;
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}
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return err;
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}
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/*****************************************************************************
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*
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* SCO Protocol socket callbacks
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*
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*/
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static void
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sco_connecting(void *arg)
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{
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struct socket *so = arg;
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DPRINTF("Connecting\n");
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soisconnecting(so);
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}
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static void
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sco_connected(void *arg)
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{
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struct socket *so = arg;
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DPRINTF("Connected\n");
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soisconnected(so);
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}
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static void
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sco_disconnected(void *arg, int err)
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{
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struct socket *so = arg;
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DPRINTF("Disconnected (%d)\n", err);
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so->so_error = err;
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soisdisconnected(so);
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}
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static void *
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sco_newconn(void *arg, struct sockaddr_bt *laddr,
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struct sockaddr_bt *raddr)
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{
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struct socket *so = arg;
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DPRINTF("New Connection\n");
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so = sonewconn(so, false);
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if (so == NULL)
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return NULL;
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soisconnecting(so);
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return so->so_pcb;
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}
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static void
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sco_complete(void *arg, int num)
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{
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struct socket *so = arg;
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while (num-- > 0)
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sbdroprecord(&so->so_snd);
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sowwakeup(so);
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}
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static void
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sco_linkmode(void *arg, int mode)
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{
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}
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static void
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sco_input(void *arg, struct mbuf *m)
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{
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struct socket *so = arg;
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/*
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* since this data is time sensitive, if the buffer
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* is full we just dump data until the latest one
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* will fit.
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*/
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while (m->m_pkthdr.len > sbspace(&so->so_rcv))
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sbdroprecord(&so->so_rcv);
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DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len);
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sbappendrecord(&so->so_rcv, m);
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sorwakeup(so);
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}
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PR_WRAP_USRREQS(sco)
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#define sco_attach sco_attach_wrapper
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#define sco_detach sco_detach_wrapper
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#define sco_accept sco_accept_wrapper
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#define sco_bind sco_bind_wrapper
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#define sco_listen sco_listen_wrapper
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#define sco_connect sco_connect_wrapper
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#define sco_connect2 sco_connect2_wrapper
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#define sco_disconnect sco_disconnect_wrapper
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#define sco_shutdown sco_shutdown_wrapper
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#define sco_abort sco_abort_wrapper
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#define sco_ioctl sco_ioctl_wrapper
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#define sco_stat sco_stat_wrapper
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#define sco_peeraddr sco_peeraddr_wrapper
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#define sco_sockaddr sco_sockaddr_wrapper
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#define sco_rcvd sco_rcvd_wrapper
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#define sco_recvoob sco_recvoob_wrapper
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#define sco_send sco_send_wrapper
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#define sco_sendoob sco_sendoob_wrapper
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#define sco_purgeif sco_purgeif_wrapper
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#define sco_usrreq sco_usrreq_wrapper
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const struct pr_usrreqs sco_usrreqs = {
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.pr_attach = sco_attach,
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.pr_detach = sco_detach,
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.pr_accept = sco_accept,
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.pr_bind = sco_bind,
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.pr_listen = sco_listen,
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.pr_connect = sco_connect,
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.pr_connect2 = sco_connect2,
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.pr_disconnect = sco_disconnect,
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.pr_shutdown = sco_shutdown,
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.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,
|
|
.pr_generic = sco_usrreq,
|
|
};
|