379 lines
8.1 KiB
C
379 lines
8.1 KiB
C
/* $NetBSD: rfcomm_socket.c,v 1.1 2006/06/19 15:44:45 gdamore 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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* Written by Iain Hibbert for Itronix Inc.
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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: rfcomm_socket.c,v 1.1 2006/06/19 15:44:45 gdamore Exp $");
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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/rfcomm.h>
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/****************************************************************************
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*
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* RFCOMM SOCK_STREAM Sockets - serial line emulation
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*
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*/
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static void rfcomm_connecting(void *);
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static void rfcomm_connected(void *);
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static void rfcomm_disconnected(void *, int);
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static void *rfcomm_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *);
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static void rfcomm_complete(void *, int);
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static void rfcomm_input(void *, struct mbuf *);
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static const struct btproto rfcomm_proto = {
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rfcomm_connecting,
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rfcomm_connected,
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rfcomm_disconnected,
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rfcomm_newconn,
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rfcomm_complete,
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rfcomm_input,
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};
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/* sysctl variables */
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int rfcomm_sendspace = 4096;
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int rfcomm_recvspace = 4096;
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/*
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* User Request.
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* up is socket
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* m is either
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* optional mbuf chain containing message
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* ioctl command (PRU_CONTROL)
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* nam is either
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* optional mbuf chain containing an address
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* ioctl data (PRU_CONTROL)
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* optionally protocol number (PRU_ATTACH)
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* message flags (PRU_RCVD)
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* ctl is either
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* optional mbuf chain containing socket options
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* optional interface pointer (PRU_CONTROL, PRU_PURGEIF)
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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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int
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rfcomm_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 rfcomm_dlc *pcb = up->so_pcb;
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struct sockaddr_bt *sa;
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struct mbuf *m0;
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int err = 0;
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DPRINTFN(2, "%s\n", prurequests[req]);
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switch (req) {
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case PRU_CONTROL:
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return EPASSTHROUGH;
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case PRU_PURGEIF:
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return EOPNOTSUPP;
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case PRU_ATTACH:
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if (pcb != NULL)
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return EINVAL;
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/*
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* Since we have nothing to add, we attach the DLC
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* structure directly to our PCB pointer.
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*/
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err = rfcomm_attach((struct rfcomm_dlc **)&up->so_pcb,
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&rfcomm_proto, up);
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if (err)
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return err;
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err = soreserve(up, rfcomm_sendspace, rfcomm_recvspace);
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if (err)
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return err;
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err = rfcomm_rcvd(up->so_pcb, sbspace(&up->so_rcv));
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if (err)
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return err;
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return 0;
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}
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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_DISCONNECT:
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soisdisconnecting(up);
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return rfcomm_disconnect(pcb, up->so_linger);
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case PRU_ABORT:
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rfcomm_disconnect(pcb, 0);
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soisdisconnected(up);
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/* fall through to */
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case PRU_DETACH:
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return rfcomm_detach((struct rfcomm_dlc **)&up->so_pcb);
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case PRU_BIND:
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KASSERT(nam);
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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 rfcomm_bind(pcb, sa);
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case PRU_CONNECT:
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KASSERT(nam);
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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(up);
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return rfcomm_connect(pcb, sa);
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case PRU_PEERADDR:
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KASSERT(nam);
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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 rfcomm_peeraddr(pcb, sa);
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case PRU_SOCKADDR:
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KASSERT(nam);
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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 rfcomm_sockaddr(pcb, sa);
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case PRU_SHUTDOWN:
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socantsendmore(up);
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break;
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case PRU_SEND:
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KASSERT(m);
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if (ctl) /* no use for that */
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m_freem(ctl);
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m0 = m_copypacket(m, M_DONTWAIT);
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if (m0 == NULL)
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return ENOMEM;
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sbappendstream(&up->so_snd, m);
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return rfcomm_send(pcb, m0);
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case PRU_SENSE:
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return 0; /* (no release) */
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case PRU_RCVD:
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return rfcomm_rcvd(pcb, sbspace(&up->so_rcv));
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case PRU_RCVOOB:
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return EOPNOTSUPP; /* (no release) */
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case PRU_LISTEN:
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return rfcomm_listen(pcb);
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case PRU_ACCEPT:
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KASSERT(nam);
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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 rfcomm_peeraddr(pcb, sa);
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case PRU_CONNECT2:
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case PRU_SENDOOB:
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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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* rfcomm_ctloutput(request, socket, level, optname, opt)
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*
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*/
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int
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rfcomm_ctloutput(int req, struct socket *so, int level,
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int optname, struct mbuf **opt)
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{
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struct rfcomm_dlc *pcb = so->so_pcb;
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struct mbuf *m;
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int err = 0;
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DPRINTFN(2, "%s\n", prcorequests[req]);
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if (level != BTPROTO_RFCOMM)
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return 0; // err?
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switch(req) {
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case PRCO_GETOPT:
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m = m_get(M_WAIT, MT_SOOPTS);
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m->m_len = rfcomm_getopt(pcb, optname, mtod(m, void *));
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if (m->m_len == 0) {
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m_freem(m);
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m = NULL;
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err = EINVAL;
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}
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*opt = m;
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break;
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case PRCO_SETOPT:
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m = *opt;
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KASSERT(m != NULL);
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err = rfcomm_setopt(pcb, optname, mtod(m, void *));
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m_freem(m);
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break;
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default:
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err = EINVAL;
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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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* RFCOMM callbacks
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*/
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static void
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rfcomm_connecting(void *arg)
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{
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/* struct socket *so = arg; */
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KASSERT(arg);
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DPRINTF("Connecting\n");
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}
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static void
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rfcomm_connected(void *arg)
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{
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struct socket *so = arg;
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KASSERT(so);
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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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rfcomm_disconnected(void *arg, int err)
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{
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struct socket *so = arg;
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KASSERT(so);
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DPRINTF("Disconnected\n");
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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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rfcomm_newconn(void *arg, struct sockaddr_bt *laddr, 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, 0);
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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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/*
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* rfcomm_complete(rfcomm_dlc, length)
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*
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* length bytes are sent and may be removed from socket buffer
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*/
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static void
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rfcomm_complete(void *arg, int length)
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{
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struct socket *so = arg;
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sbdrop(&so->so_snd, length);
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sowwakeup(so);
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}
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/*
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* rfcomm_input(rfcomm_dlc, mbuf)
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*/
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static void
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rfcomm_input(void *arg, struct mbuf *m)
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{
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struct socket *so = arg;
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KASSERT(so);
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if (m->m_pkthdr.len > sbspace(&so->so_rcv)) {
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printf("%s: %d bytes dropped (socket buffer full)\n",
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__func__, m->m_pkthdr.len);
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m_freem(m);
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return;
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}
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DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len);
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sbappendstream(&so->so_rcv, m);
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sorwakeup(so);
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}
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