2 * Copyright (c) 1995, Mike Mitchell
3 * Copyright (c) 1984, 1985, 1986, 1987, 1993
4 * The Regents of the University of California. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
42 #include <sys/param.h>
43 #include <sys/kernel.h>
46 #include <sys/protosw.h>
47 #include <sys/signalvar.h>
48 #include <sys/socket.h>
49 #include <sys/socketvar.h>
51 #include <sys/sysctl.h>
52 #include <sys/systm.h>
55 #include <net/route.h>
57 #include <netinet/in.h>
59 #include <netipx/ipx.h>
60 #include <netipx/ipx_if.h>
61 #include <netipx/ipx_ip.h>
62 #include <netipx/ipx_pcb.h>
63 #include <netipx/ipx_var.h>
66 * IPX protocol implementation.
69 static int ipxsendspace = IPXSNDQ;
70 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
71 &ipxsendspace, 0, "");
72 static int ipxrecvspace = IPXRCVQ;
73 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
74 &ipxrecvspace, 0, "");
76 static int ipx_usr_abort(struct socket *so);
77 static int ipx_attach(struct socket *so, int proto, struct thread *td);
78 static int ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td);
79 static int ipx_connect(struct socket *so, struct sockaddr *nam,
81 static int ipx_detach(struct socket *so);
82 static int ipx_disconnect(struct socket *so);
83 static int ipx_send(struct socket *so, int flags, struct mbuf *m,
84 struct sockaddr *addr, struct mbuf *control,
86 static int ipx_shutdown(struct socket *so);
87 static int ripx_attach(struct socket *so, int proto, struct thread *td);
88 static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
90 struct pr_usrreqs ipx_usrreqs = {
91 ipx_usr_abort, pru_accept_notsupp, ipx_attach, ipx_bind,
92 ipx_connect, pru_connect2_notsupp, ipx_control, ipx_detach,
93 ipx_disconnect, pru_listen_notsupp, ipx_peeraddr, pru_rcvd_notsupp,
94 pru_rcvoob_notsupp, ipx_send, pru_sense_null, ipx_shutdown,
95 ipx_sockaddr, sosend, soreceive, sopoll, pru_sosetlabel_null
98 struct pr_usrreqs ripx_usrreqs = {
99 ipx_usr_abort, pru_accept_notsupp, ripx_attach, ipx_bind,
100 ipx_connect, pru_connect2_notsupp, ipx_control, ipx_detach,
101 ipx_disconnect, pru_listen_notsupp, ipx_peeraddr, pru_rcvd_notsupp,
102 pru_rcvoob_notsupp, ipx_send, pru_sense_null, ipx_shutdown,
103 ipx_sockaddr, sosend, soreceive, sopoll, pru_sosetlabel_null
107 * This may also be called for raw listeners.
112 register struct ipxpcb *ipxp;
114 register struct ipx *ipx = mtod(m, struct ipx *);
115 struct ifnet *ifp = m->m_pkthdr.rcvif;
116 struct sockaddr_ipx ipx_ipx;
121 * Construct sockaddr format source address.
122 * Stuff source address and datagram in user buffer.
124 ipx_ipx.sipx_len = sizeof(ipx_ipx);
125 ipx_ipx.sipx_family = AF_IPX;
126 ipx_ipx.sipx_addr = ipx->ipx_sna;
127 ipx_ipx.sipx_zero[0] = '\0';
128 ipx_ipx.sipx_zero[1] = '\0';
129 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
130 register struct ifaddr *ifa;
132 for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa != NULL;
133 ifa = TAILQ_NEXT(ifa, ifa_link)) {
134 if (ifa->ifa_addr->sa_family == AF_IPX) {
135 ipx_ipx.sipx_addr.x_net =
136 IA_SIPX(ifa)->sipx_addr.x_net;
141 ipxp->ipxp_rpt = ipx->ipx_pt;
142 if (!(ipxp->ipxp_flags & IPXP_RAWIN) ) {
143 m->m_len -= sizeof(struct ipx);
144 m->m_pkthdr.len -= sizeof(struct ipx);
145 m->m_data += sizeof(struct ipx);
147 if (sbappendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
148 m, (struct mbuf *)NULL) == 0)
150 sorwakeup(ipxp->ipxp_socket);
160 struct socket *so = ipxp->ipxp_socket;
162 ipx_pcbdisconnect(ipxp);
163 soisdisconnected(so);
167 * Drop connection, reporting
168 * the specified error.
171 ipx_drop(ipxp, errno)
172 register struct ipxpcb *ipxp;
175 struct socket *so = ipxp->ipxp_socket;
178 * someday, in the IPX world
179 * we will generate error protocol packets
180 * announcing that the socket has gone away.
182 * XXX Probably never. IPX does not have error packets.
184 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
185 tp->t_state = TCPS_CLOSED;
188 so->so_error = errno;
189 ipx_pcbdisconnect(ipxp);
190 soisdisconnected(so);
198 register struct ipx *ipx;
199 register struct socket *so;
200 register int len = 0;
201 register struct route *ro;
203 struct mbuf *mprev = NULL;
206 * Calculate data length.
208 for (m = m0; m != NULL; m = m->m_next) {
213 * Make sure packet is actually of even length.
218 if ((m->m_flags & M_EXT) == 0 &&
219 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
220 mtod(m, char*)[m->m_len++] = 0;
222 struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
229 * mtod(m1, char *) = 0;
236 * Fill in mbuf with extended IPX header
237 * and addresses and length put into network format.
240 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
241 ipx = mtod(m, struct ipx *);
243 M_PREPEND(m, sizeof(struct ipx), M_DONTWAIT);
246 ipx = mtod(m, struct ipx *);
248 ipx->ipx_pt = ipxp->ipxp_dpt;
249 ipx->ipx_sna = ipxp->ipxp_laddr;
250 ipx->ipx_dna = ipxp->ipxp_faddr;
251 len += sizeof(struct ipx);
254 ipx->ipx_len = htons((u_short)len);
256 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
257 ipx->ipx_sum = ipx_cksum(m, len);
259 ipx->ipx_sum = 0xffff;
264 so = ipxp->ipxp_socket;
265 if (so->so_options & SO_DONTROUTE)
266 return (ipx_outputfl(m, (struct route *)NULL,
267 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
269 * Use cached route for previous datagram if
270 * possible. If the previous net was the same
271 * and the interface was a broadcast medium, or
272 * if the previous destination was identical,
275 * NB: We don't handle broadcasts because that
276 * would require 3 subroutine calls.
278 ro = &ipxp->ipxp_route;
279 #ifdef ancient_history
281 * I think that this will all be handled in ipx_pcbconnect!
283 if (ro->ro_rt != NULL) {
284 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
286 * This assumes we have no GH type routes
288 if (ro->ro_rt->rt_flags & RTF_HOST) {
289 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
293 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
294 register struct ipx_addr *dst =
295 &satoipx_addr(ro->ro_dst);
296 dst->x_host = ipx->ipx_dna.x_host;
299 * Otherwise, we go through the same gateway
300 * and dst is already set up.
308 ipxp->ipxp_lastdst = ipx->ipx_dna;
309 #endif /* ancient_history */
310 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
314 ipx_ctloutput(so, sopt)
316 struct sockopt *sopt;
318 struct ipxpcb *ipxp = sotoipxpcb(so);
319 int mask, error, optval;
327 switch (sopt->sopt_dir) {
329 switch (sopt->sopt_name) {
331 mask = IPXP_ALL_PACKETS;
334 case SO_HEADERS_ON_INPUT:
338 case SO_IPX_CHECKSUM:
339 mask = IPXP_CHECKSUM;
342 case SO_HEADERS_ON_OUTPUT:
345 soptval = ipxp->ipxp_flags & mask;
346 error = sooptcopyout(sopt, &soptval, sizeof soptval);
349 case SO_DEFAULT_HEADERS:
353 ioptval.ipx_pt = ipxp->ipxp_dpt;
354 ioptval.ipx_dna = ipxp->ipxp_faddr;
355 ioptval.ipx_sna = ipxp->ipxp_laddr;
356 error = sooptcopyout(sopt, &soptval, sizeof soptval);
360 error = sooptcopyout(sopt, &ipx_pexseq,
371 switch (sopt->sopt_name) {
373 mask = IPXP_ALL_PACKETS;
376 case SO_HEADERS_ON_INPUT:
380 case SO_IPX_CHECKSUM:
381 mask = IPXP_CHECKSUM;
383 case SO_HEADERS_ON_OUTPUT:
386 error = sooptcopyin(sopt, &optval, sizeof optval,
391 ipxp->ipxp_flags |= mask;
393 ipxp->ipxp_flags &= ~mask;
396 case SO_DEFAULT_HEADERS:
397 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
401 ipxp->ipxp_dpt = ioptval.ipx_pt;
405 error = ipxip_route(so, sopt);
421 struct ipxpcb *ipxp = sotoipxpcb(so);
426 soisdisconnected(so);
433 ipx_attach(so, proto, td)
440 struct ipxpcb *ipxp = sotoipxpcb(so);
445 error = ipx_pcballoc(so, &ipxpcb, td);
448 error = soreserve(so, ipxsendspace, ipxrecvspace);
453 ipx_bind(so, nam, td)
455 struct sockaddr *nam;
458 struct ipxpcb *ipxp = sotoipxpcb(so);
460 return (ipx_pcbbind(ipxp, nam, td));
464 ipx_connect(so, nam, td)
466 struct sockaddr *nam;
471 struct ipxpcb *ipxp = sotoipxpcb(so);
473 if (!ipx_nullhost(ipxp->ipxp_faddr))
476 error = ipx_pcbconnect(ipxp, nam, td);
488 struct ipxpcb *ipxp = sotoipxpcb(so);
503 struct ipxpcb *ipxp = sotoipxpcb(so);
505 if (ipx_nullhost(ipxp->ipxp_faddr))
508 ipx_pcbdisconnect(ipxp);
510 soisdisconnected(so);
515 ipx_peeraddr(so, nam)
517 struct sockaddr **nam;
519 struct ipxpcb *ipxp = sotoipxpcb(so);
521 ipx_setpeeraddr(ipxp, nam); /* XXX what if alloc fails? */
526 ipx_send(so, flags, m, nam, control, td)
530 struct sockaddr *nam;
531 struct mbuf *control;
535 struct ipxpcb *ipxp = sotoipxpcb(so);
536 struct ipx_addr laddr;
540 laddr = ipxp->ipxp_laddr;
541 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
546 * Must block input while temporarily connected.
549 error = ipx_pcbconnect(ipxp, nam, td);
555 if (ipx_nullhost(ipxp->ipxp_faddr)) {
560 error = ipx_output(ipxp, m);
563 ipx_pcbdisconnect(ipxp);
565 ipxp->ipxp_laddr = laddr;
583 ipx_sockaddr(so, nam)
585 struct sockaddr **nam;
587 struct ipxpcb *ipxp = sotoipxpcb(so);
589 ipx_setsockaddr(ipxp, nam); /* XXX what if alloc fails? */
594 ripx_attach(so, proto, td)
601 struct ipxpcb *ipxp = sotoipxpcb(so);
603 if (td != NULL && (error = suser(td)) != 0)
606 error = ipx_pcballoc(so, &ipxrawpcb, td);
610 error = soreserve(so, ipxsendspace, ipxrecvspace);
613 ipxp = sotoipxpcb(so);
614 ipxp->ipxp_faddr.x_host = ipx_broadhost;
615 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;