250 lines
6.1 KiB
C
250 lines
6.1 KiB
C
/* $NetBSD: idrp_usrreq.c,v 1.12 2003/08/07 16:33:35 agc Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)idrp_usrreq.c 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: idrp_usrreq.c,v 1.12 2003/08/07 16:33:35 agc Exp $");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/protosw.h>
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#include <sys/errno.h>
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#include <net/raw_cb.h>
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#include <net/route.h>
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#include <net/if.h>
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#include <netiso/argo_debug.h>
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#include <netiso/iso.h>
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#include <netiso/clnp.h>
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#include <netiso/clnl.h>
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#include <netiso/iso_pcb.h>
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#include <netiso/iso_var.h>
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#include <netiso/idrp_var.h>
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#include <machine/stdarg.h>
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LIST_HEAD(, rawcb) idrp_pcb;
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struct isopcb idrp_isop;
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static struct sockaddr_iso idrp_addrs[2] =
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{{sizeof(idrp_addrs), AF_ISO,}, {sizeof(idrp_addrs[1]), AF_ISO,}};
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/*
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* IDRP initialization
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*/
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void
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idrp_init()
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{
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extern struct clnl_protosw clnl_protox[256];
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LIST_INIT(&idrp_pcb);
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idrp_isop.isop_next = idrp_isop.isop_prev = &idrp_isop;
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idrp_isop.isop_faddr = &idrp_isop.isop_sfaddr;
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idrp_isop.isop_laddr = &idrp_isop.isop_sladdr;
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idrp_isop.isop_sladdr = idrp_addrs[1];
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idrp_isop.isop_sfaddr = idrp_addrs[1];
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clnl_protox[ISO10747_IDRP].clnl_input = idrp_input;
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}
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/*
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* CALLED FROM:
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* tpclnp_input().
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* FUNCTION and ARGUMENTS:
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* Take a packet (m) from clnp, strip off the clnp header
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* and mke suitable for the idrp socket.
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* No return value.
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*/
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void
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#if __STDC__
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idrp_input(struct mbuf *m, ...)
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#else
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idrp_input(m, va_alist)
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struct mbuf *m;
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va_dcl
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#endif
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{
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struct sockaddr_iso *src, *dst;
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va_list ap;
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va_start(ap, m);
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src = va_arg(ap, struct sockaddr_iso *);
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dst = va_arg(ap, struct sockaddr_iso *);
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va_end(ap);
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if (idrp_isop.isop_socket == 0) {
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bad: m_freem(m);
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return;
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}
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bzero(idrp_addrs[0].siso_data, sizeof(idrp_addrs[0].siso_data));
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bcopy((caddr_t) & (src->siso_addr), (caddr_t) & idrp_addrs[0].siso_addr,
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1 + src->siso_nlen);
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bzero(idrp_addrs[1].siso_data, sizeof(idrp_addrs[1].siso_data));
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bcopy((caddr_t) & (dst->siso_addr), (caddr_t) & idrp_addrs[1].siso_addr,
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1 + dst->siso_nlen);
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if (sbappendaddr(&idrp_isop.isop_socket->so_rcv,
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sisotosa(idrp_addrs), m, (struct mbuf *) 0) == 0)
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goto bad;
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sorwakeup(idrp_isop.isop_socket);
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}
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int
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#if __STDC__
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idrp_output(struct mbuf *m, ...)
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#else
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idrp_output(m, va_alist)
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struct mbuf *m;
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va_dcl
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#endif
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{
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struct sockaddr_iso *siso;
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int s = splsoftnet(), i;
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va_list ap;
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va_start(ap, m);
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siso = va_arg(ap, struct sockaddr_iso *);
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va_end(ap);
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bcopy((caddr_t) & (siso->siso_addr),
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(caddr_t) & idrp_isop.isop_sfaddr.siso_addr, 1 + siso->siso_nlen);
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siso++;
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bcopy((caddr_t) & (siso->siso_addr),
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(caddr_t) & idrp_isop.isop_sladdr.siso_addr, 1 + siso->siso_nlen);
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i = clnp_output(m, idrp_isop, m->m_pkthdr.len, 0);
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splx(s);
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return (i);
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}
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u_long idrp_sendspace = 3072; /* really max datagram size */
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u_long idrp_recvspace = 40 * 1024; /* 40 1K datagrams */
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/* ARGSUSED */
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int
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idrp_usrreq(so, req, m, nam, control, p)
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struct socket *so;
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int req;
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struct mbuf *m, *nam, *control;
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struct proc *p;
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{
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struct rawcb *rp;
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int error = 0;
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if (req == PRU_CONTROL)
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return (EOPNOTSUPP);
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rp = sotorawcb(so);
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#ifdef DIAGNOSTIC
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if (req != PRU_SEND && req != PRU_SENDOOB && control)
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panic("idrp_usrreq: unexpected control mbuf");
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#endif
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if (rp == 0 && req != PRU_ATTACH) {
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error = EINVAL;
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goto release;
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}
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/*
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* Note: need to block idrp_input while changing the udp pcb queue
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* and/or pcb addresses.
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*/
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switch (req) {
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case PRU_ATTACH:
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if (rp != 0) {
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error = EISCONN;
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break;
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}
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if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
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error = soreserve(so, idrp_sendspace, idrp_recvspace);
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if (error)
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break;
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}
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MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK);
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if (rp == 0) {
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error = ENOBUFS;
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break;
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}
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bzero(rp, sizeof(*rp));
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rp->rcb_socket = so;
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LIST_INSERT_HEAD(&idrp_pcb, rp, rcb_list);
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so->so_pcb = rp;
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break;
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case PRU_SEND:
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if (control && control->m_len) {
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m_freem(control);
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m_freem(m);
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error = EINVAL;
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break;
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}
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if (nam == NULL) {
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m_freem(m);
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error = EINVAL;
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break;
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}
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/* error checking here */
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error = idrp_output(m, mtod(nam, struct sockaddr_iso *));
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break;
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case PRU_SENDOOB:
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m_freem(control);
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m_freem(m);
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error = EOPNOTSUPP;
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break;
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case PRU_DETACH:
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raw_detach(rp);
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break;
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case PRU_SHUTDOWN:
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socantsendmore(so);
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break;
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case PRU_SENSE:
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/*
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* stat: don't bother with a blocksize.
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*/
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return (0);
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default:
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error = EOPNOTSUPP;
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break;
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}
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release:
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return (error);
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}
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