a5c89047c0
NetBSD Foundation Membership still pending.) This stack was written by Iain under sponsorship from Itronix Inc. The stack includes support for rfcomm networking (networking via your bluetooth enabled cell phone), hid devices (keyboards/mice), and headsets. Drivers for both PCMCIA and USB bluetooth controllers are included.
371 lines
7.9 KiB
C
371 lines
7.9 KiB
C
/* $NetBSD: l2cap_socket.c,v 1.1 2006/06/19 15:44:45 gdamore Exp $ */
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/*-
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* Copyright (c) 2005 Iain Hibbert.
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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: l2cap_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/l2cap.h>
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/*
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* L2CAP Sockets
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*
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* SOCK_SEQPACKET - normal L2CAP connection
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*
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* SOCK_DGRAM - connectionless L2CAP - XXX not yet
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*/
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static void l2cap_connecting(void *);
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static void l2cap_connected(void *);
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static void l2cap_disconnected(void *, int);
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static void *l2cap_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *);
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static void l2cap_complete(void *, int);
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static void l2cap_input(void *, struct mbuf *);
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static const struct btproto l2cap_proto = {
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l2cap_connecting,
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l2cap_connected,
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l2cap_disconnected,
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l2cap_newconn,
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l2cap_complete,
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l2cap_input
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};
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/* sysctl variables */
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int l2cap_sendspace = 4096;
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int l2cap_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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l2cap_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 l2cap_channel *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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* For L2CAP socket PCB we just use an l2cap_channel structure
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* since we have nothing to add..
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*/
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err = soreserve(up, l2cap_sendspace, l2cap_recvspace);
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if (err)
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return err;
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return l2cap_attach((struct l2cap_channel **)&up->so_pcb,
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&l2cap_proto, up);
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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 l2cap_disconnect(pcb, up->so_linger);
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case PRU_ABORT:
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l2cap_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 l2cap_detach((struct l2cap_channel **)&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 l2cap_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 l2cap_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 l2cap_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 l2cap_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 (m->m_pkthdr.len == 0)
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break;
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if (m->m_pkthdr.len > pcb->lc_omtu) {
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err = EMSGSIZE;
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break;
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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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break;
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}
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if (ctl) /* no use for that */
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m_freem(ctl);
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sbappendrecord(&up->so_snd, m);
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return l2cap_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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case PRU_RCVOOB:
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return EOPNOTSUPP; /* (no release) */
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case PRU_LISTEN:
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return l2cap_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 l2cap_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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* l2cap_ctloutput(request, socket, level, optname, opt)
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*
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* Apply configuration commands to channel. This corresponds to
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* "Reconfigure Channel Request" in the L2CAP specification.
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*/
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int
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l2cap_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 l2cap_channel *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_L2CAP)
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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 = l2cap_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 = l2cap_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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* L2CAP Protocol socket callbacks
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*
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*/
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static void
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l2cap_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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l2cap_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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l2cap_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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l2cap_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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static void
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l2cap_complete(void *arg, int count)
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{
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struct socket *so = arg;
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while (count-- > 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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l2cap_input(void *arg, struct mbuf *m)
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{
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struct socket *so = arg;
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if (m->m_pkthdr.len > sbspace(&so->so_rcv)) {
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printf("%s: packet (%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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sbappendrecord(&so->so_rcv, m);
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sorwakeup(so);
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}
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