freebsd-nq/sys/netipx/ipx_usrreq.c

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/*
* Copyright (c) 1995, Mike Mitchell
* Copyright (c) 1984, 1985, 1986, 1987, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ipx_usrreq.c
*
* $Id: ipx_usrreq.c,v 1.8 1996/11/24 08:25:48 jhay Exp $
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netipx/ipx.h>
#include <netipx/ipx_pcb.h>
#include <netipx/ipx_if.h>
#include <netipx/ipx_var.h>
#include <netipx/ipx_error.h>
#include <netipx/ipx_ip.h>
/*
* IPX protocol implementation.
*/
int noipxRoute;
int ipxsendspace = IPXSNDQ;
SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
&ipxsendspace, 0, "");
int ipxrecvspace = IPXRCVQ;
SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
&ipxrecvspace, 0, "");
/*
* This may also be called for raw listeners.
*/
void
ipx_input(m, ipxp)
struct mbuf *m;
register struct ipxpcb *ipxp;
{
register struct ipx *ipx = mtod(m, struct ipx *);
struct ifnet *ifp = m->m_pkthdr.rcvif;
struct sockaddr_ipx ipx_ipx;
if (ipxp==0)
panic("No ipxpcb");
/*
* Construct sockaddr format source address.
* Stuff source address and datagram in user buffer.
*/
ipx_ipx.sipx_len = sizeof(ipx_ipx);
ipx_ipx.sipx_family = AF_IPX;
ipx_ipx.sipx_addr = ipx->ipx_sna;
ipx_ipx.sipx_zero[0] = '\0';
ipx_ipx.sipx_zero[1] = '\0';
if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp) {
register struct ifaddr *ifa;
for (ifa = ifp->if_addrhead.tqh_first; ifa;
ifa = ifa->ifa_link.tqe_next) {
if (ifa->ifa_addr->sa_family == AF_IPX) {
ipx_ipx.sipx_addr.x_net =
IA_SIPX(ifa)->sipx_addr.x_net;
break;
}
}
}
ipxp->ipxp_rpt = ipx->ipx_pt;
if ( ! (ipxp->ipxp_flags & IPXP_RAWIN) ) {
m->m_len -= sizeof (struct ipx);
m->m_pkthdr.len -= sizeof (struct ipx);
m->m_data += sizeof (struct ipx);
}
if (sbappendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
m, (struct mbuf *)0) == 0)
goto bad;
sorwakeup(ipxp->ipxp_socket);
return;
bad:
m_freem(m);
}
void
ipx_abort(ipxp)
struct ipxpcb *ipxp;
{
struct socket *so = ipxp->ipxp_socket;
ipx_pcbdisconnect(ipxp);
soisdisconnected(so);
}
/*
* Drop connection, reporting
* the specified error.
*/
/* struct ipxpcb * DELETE THIS */
void
ipx_drop(ipxp, errno)
register struct ipxpcb *ipxp;
int errno;
{
struct socket *so = ipxp->ipxp_socket;
/*
* someday, in the xerox world
* we will generate error protocol packets
* announcing that the socket has gone away.
*/
/*if (TCPS_HAVERCVDSYN(tp->t_state)) {
tp->t_state = TCPS_CLOSED;
(void) tcp_output(tp);
}*/
so->so_error = errno;
ipx_pcbdisconnect(ipxp);
soisdisconnected(so);
}
int
ipx_output(ipxp, m0)
struct ipxpcb *ipxp;
struct mbuf *m0;
{
register struct mbuf *m;
register struct ipx *ipx;
register struct socket *so;
register int len = 0;
register struct route *ro;
struct mbuf *mprev = NULL;
/*
* Calculate data length.
*/
for (m = m0; m; m = m->m_next) {
mprev = m;
len += m->m_len;
}
/*
* Make sure packet is actually of even length.
*/
if (len & 1) {
m = mprev;
if ((m->m_flags & M_EXT) == 0 &&
(m->m_len + m->m_data < &m->m_dat[MLEN])) {
m->m_len++;
} else {
struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
if (m1 == 0) {
m_freem(m0);
return (ENOBUFS);
}
m1->m_len = 1;
* mtod(m1, char *) = 0;
m->m_next = m1;
}
m0->m_pkthdr.len++;
}
/*
* Fill in mbuf with extended IPX header
* and addresses and length put into network format.
*/
m = m0;
if (ipxp->ipxp_flags & IPXP_RAWOUT) {
ipx = mtod(m, struct ipx *);
} else {
M_PREPEND(m, sizeof (struct ipx), M_DONTWAIT);
if (m == 0)
return (ENOBUFS);
ipx = mtod(m, struct ipx *);
ipx->ipx_tc = 0;
ipx->ipx_pt = ipxp->ipxp_dpt;
ipx->ipx_sna = ipxp->ipxp_laddr;
ipx->ipx_dna = ipxp->ipxp_faddr;
len += sizeof (struct ipx);
}
ipx->ipx_len = htons((u_short)len);
if (ipxcksum) {
ipx->ipx_sum = 0;
len = ((len - 1) | 1) + 1;
ipx->ipx_sum = ipx_cksum(m, len);
} else
ipx->ipx_sum = 0xffff;
/*
* Output datagram.
*/
so = ipxp->ipxp_socket;
if (so->so_options & SO_DONTROUTE)
return (ipx_outputfl(m, (struct route *)0,
(so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
/*
* Use cached route for previous datagram if
* possible. If the previous net was the same
* and the interface was a broadcast medium, or
* if the previous destination was identical,
* then we are ok.
*
* NB: We don't handle broadcasts because that
* would require 3 subroutine calls.
*/
ro = &ipxp->ipxp_route;
#ifdef ancient_history
/*
* I think that this will all be handled in ipx_pcbconnect!
*/
if (ro->ro_rt) {
if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
/*
* This assumes we have no GH type routes
*/
if (ro->ro_rt->rt_flags & RTF_HOST) {
if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
goto re_route;
}
if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
register struct ipx_addr *dst =
&satoipx_addr(ro->ro_dst);
dst->x_host = ipx->ipx_dna.x_host;
}
/*
* Otherwise, we go through the same gateway
* and dst is already set up.
*/
} else {
re_route:
RTFREE(ro->ro_rt);
ro->ro_rt = (struct rtentry *)0;
}
}
ipxp->ipxp_lastdst = ipx->ipx_dna;
#endif /* ancient_history */
if (noipxRoute)
ro = 0;
return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
}
/* ARGSUSED */
int
ipx_ctloutput(req, so, level, name, value)
int req, level;
struct socket *so;
int name;
struct mbuf **value;
{
register struct mbuf *m;
struct ipxpcb *ipxp = sotoipxpcb(so);
int mask, error = 0;
/*extern long ipx_pexseq;*/ /*XXX*//*JRE*/
if (ipxp == NULL)
return (EINVAL);
switch (req) {
case PRCO_GETOPT:
if (value==NULL)
return (EINVAL);
m = m_get(M_DONTWAIT, MT_DATA);
if (m==NULL)
return (ENOBUFS);
switch (name) {
case SO_ALL_PACKETS:
mask = IPXP_ALL_PACKETS;
goto get_flags;
case SO_HEADERS_ON_INPUT:
mask = IPXP_RAWIN;
goto get_flags;
case SO_HEADERS_ON_OUTPUT:
mask = IPXP_RAWOUT;
get_flags:
m->m_len = sizeof(short);
*mtod(m, short *) = ipxp->ipxp_flags & mask;
break;
case SO_DEFAULT_HEADERS:
m->m_len = sizeof(struct ipx);
{
register struct ipx *ipx = mtod(m, struct ipx *);
ipx->ipx_len = 0;
ipx->ipx_sum = 0;
ipx->ipx_tc = 0;
ipx->ipx_pt = ipxp->ipxp_dpt;
ipx->ipx_dna = ipxp->ipxp_faddr;
ipx->ipx_sna = ipxp->ipxp_laddr;
}
break;
case SO_SEQNO:
m->m_len = sizeof(long);
*mtod(m, long *) = ipx_pexseq++;
break;
default:
error = EINVAL;
}
*value = m;
break;
case PRCO_SETOPT:
switch (name) {
int *ok;
case SO_ALL_PACKETS:
mask = IPXP_ALL_PACKETS;
goto set_head;
case SO_HEADERS_ON_INPUT:
mask = IPXP_RAWIN;
goto set_head;
case SO_HEADERS_ON_OUTPUT:
mask = IPXP_RAWOUT;
set_head:
if (value && *value) {
ok = mtod(*value, int *);
if (*ok)
ipxp->ipxp_flags |= mask;
else
ipxp->ipxp_flags &= ~mask;
} else error = EINVAL;
break;
case SO_DEFAULT_HEADERS:
{
register struct ipx *ipx
= mtod(*value, struct ipx *);
ipxp->ipxp_dpt = ipx->ipx_pt;
}
break;
#ifdef IPXIP
case SO_IPXIP_ROUTE:
error = ipxip_route(so, *value);
break;
#endif /* IPXIP */
#ifdef IPXTUNNEL
case SO_IPXTUNNEL_ROUTE
error = ipxtun_route(so, *value);
break;
#endif
default:
error = EINVAL;
}
if (value && *value)
m_freem(*value);
break;
}
return (error);
}
/*ARGSUSED*/
int
ipx_usrreq(so, req, m, nam, control)
struct socket *so;
int req;
struct mbuf *m, *nam, *control;
{
struct ipxpcb *ipxp = sotoipxpcb(so);
int error = 0;
if (req == PRU_CONTROL)
return (ipx_control(so, (int)m, (caddr_t)nam,
(struct ifnet *)control));
if (control && control->m_len) {
error = EINVAL;
goto release;
}
if (ipxp == NULL && req != PRU_ATTACH) {
error = EINVAL;
goto release;
}
switch (req) {
case PRU_ATTACH:
if (ipxp != NULL) {
error = EINVAL;
break;
}
error = ipx_pcballoc(so, &ipxpcb);
if (error)
break;
error = soreserve(so, ipxsendspace, ipxrecvspace);
if (error)
break;
break;
case PRU_DETACH:
if (ipxp == NULL) {
error = ENOTCONN;
break;
}
ipx_pcbdetach(ipxp);
break;
case PRU_BIND:
error = ipx_pcbbind(ipxp, nam);
break;
case PRU_LISTEN:
error = EOPNOTSUPP;
break;
case PRU_CONNECT:
if (!ipx_nullhost(ipxp->ipxp_faddr)) {
error = EISCONN;
break;
}
error = ipx_pcbconnect(ipxp, nam);
if (error == 0)
soisconnected(so);
break;
case PRU_CONNECT2:
error = EOPNOTSUPP;
break;
case PRU_ACCEPT:
error = EOPNOTSUPP;
break;
case PRU_DISCONNECT:
if (ipx_nullhost(ipxp->ipxp_faddr)) {
error = ENOTCONN;
break;
}
ipx_pcbdisconnect(ipxp);
soisdisconnected(so);
break;
case PRU_SHUTDOWN:
socantsendmore(so);
break;
case PRU_SEND:
{
struct ipx_addr laddr;
int s = 0;
if (nam) {
laddr = ipxp->ipxp_laddr;
if (!ipx_nullhost(ipxp->ipxp_faddr)) {
error = EISCONN;
break;
}
/*
* Must block input while temporarily connected.
*/
s = splnet();
error = ipx_pcbconnect(ipxp, nam);
if (error) {
splx(s);
break;
}
} else {
if (ipx_nullhost(ipxp->ipxp_faddr)) {
error = ENOTCONN;
break;
}
}
error = ipx_output(ipxp, m);
m = NULL;
if (nam) {
ipx_pcbdisconnect(ipxp);
splx(s);
ipxp->ipxp_laddr.x_host = laddr.x_host;
ipxp->ipxp_laddr.x_port = laddr.x_port;
}
}
break;
case PRU_ABORT:
ipx_pcbdetach(ipxp);
sofree(so);
soisdisconnected(so);
break;
case PRU_SOCKADDR:
ipx_setsockaddr(ipxp, nam);
break;
case PRU_PEERADDR:
ipx_setpeeraddr(ipxp, nam);
break;
case PRU_SENSE:
/*
* stat: don't bother with a blocksize.
*/
return (0);
case PRU_SENDOOB:
case PRU_FASTTIMO:
case PRU_SLOWTIMO:
case PRU_PROTORCV:
case PRU_PROTOSEND:
error = EOPNOTSUPP;
break;
case PRU_CONTROL:
case PRU_RCVD:
case PRU_RCVOOB:
return (EOPNOTSUPP); /* do not free mbuf's */
default:
panic("ipx_usrreq");
}
release:
if (control != NULL)
m_freem(control);
if (m != NULL)
m_freem(m);
return (error);
}
/*ARGSUSED*/
int
ipx_raw_usrreq(so, req, m, nam, control)
struct socket *so;
int req;
struct mbuf *m, *nam, *control;
{
int error = 0;
struct ipxpcb *ipxp = sotoipxpcb(so);
/*extern struct ipxpcb ipxrawpcb;*//*XXX*//*JRE*/
switch (req) {
case PRU_ATTACH:
if (!(so->so_state & SS_PRIV) || (ipxp != NULL)) {
error = EINVAL;
break;
}
error = ipx_pcballoc(so, &ipxrawpcb);
if (error)
break;
error = soreserve(so, ipxsendspace, ipxrecvspace);
if (error)
break;
ipxp = sotoipxpcb(so);
ipxp->ipxp_faddr.x_host = ipx_broadhost;
ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;
break;
default:
error = ipx_usrreq(so, req, m, nam, control);
}
return (error);
}