2 * Copyright (c) 1984, 1985, 1986, 1987, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 2004-2006 Robert N. M. Watson
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 4. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Copyright (c) 1995, Mike Mitchell
32 * All rights reserved.
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. All advertising materials mentioning features or use of this software
43 * must display the following acknowledgement:
44 * This product includes software developed by the University of
45 * California, Berkeley and its contributors.
46 * 4. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD$");
70 #include <sys/param.h>
71 #include <sys/kernel.h>
75 #include <sys/protosw.h>
76 #include <sys/signalvar.h>
77 #include <sys/socket.h>
78 #include <sys/socketvar.h>
80 #include <sys/sysctl.h>
81 #include <sys/systm.h>
84 #include <net/route.h>
86 #include <netinet/in.h>
88 #include <netipx/ipx.h>
89 #include <netipx/ipx_if.h>
90 #include <netipx/ipx_pcb.h>
91 #include <netipx/ipx_var.h>
94 * IPX protocol implementation.
97 static int ipxsendspace = IPXSNDQ;
98 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
99 &ipxsendspace, 0, "");
100 static int ipxrecvspace = IPXRCVQ;
101 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
102 &ipxrecvspace, 0, "");
104 static void ipx_usr_abort(struct socket *so);
105 static int ipx_attach(struct socket *so, int proto, struct thread *td);
106 static int ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td);
107 static int ipx_connect(struct socket *so, struct sockaddr *nam,
109 static void ipx_detach(struct socket *so);
110 static int ipx_disconnect(struct socket *so);
111 static int ipx_send(struct socket *so, int flags, struct mbuf *m,
112 struct sockaddr *addr, struct mbuf *control,
114 static int ipx_shutdown(struct socket *so);
115 static int ripx_attach(struct socket *so, int proto, struct thread *td);
116 static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
117 static void ipx_usr_close(struct socket *so);
119 struct pr_usrreqs ipx_usrreqs = {
120 .pru_abort = ipx_usr_abort,
121 .pru_attach = ipx_attach,
122 .pru_bind = ipx_bind,
123 .pru_connect = ipx_connect,
124 .pru_control = ipx_control,
125 .pru_detach = ipx_detach,
126 .pru_disconnect = ipx_disconnect,
127 .pru_peeraddr = ipx_peeraddr,
128 .pru_send = ipx_send,
129 .pru_shutdown = ipx_shutdown,
130 .pru_sockaddr = ipx_sockaddr,
131 .pru_close = ipx_usr_close,
134 struct pr_usrreqs ripx_usrreqs = {
135 .pru_abort = ipx_usr_abort,
136 .pru_attach = ripx_attach,
137 .pru_bind = ipx_bind,
138 .pru_connect = ipx_connect,
139 .pru_control = ipx_control,
140 .pru_detach = ipx_detach,
141 .pru_disconnect = ipx_disconnect,
142 .pru_peeraddr = ipx_peeraddr,
143 .pru_send = ipx_send,
144 .pru_shutdown = ipx_shutdown,
145 .pru_sockaddr = ipx_sockaddr,
146 .pru_close = ipx_usr_close,
150 * This may also be called for raw listeners.
153 ipx_input(struct mbuf *m, struct ipxpcb *ipxp)
155 struct ipx *ipx = mtod(m, struct ipx *);
156 struct ifnet *ifp = m->m_pkthdr.rcvif;
157 struct sockaddr_ipx ipx_ipx;
159 KASSERT(ipxp != NULL, ("ipx_input: NULL ipxpcb"));
160 IPX_LOCK_ASSERT(ipxp);
162 * Construct sockaddr format source address.
163 * Stuff source address and datagram in user buffer.
165 ipx_ipx.sipx_len = sizeof(ipx_ipx);
166 ipx_ipx.sipx_family = AF_IPX;
167 ipx_ipx.sipx_addr = ipx->ipx_sna;
168 ipx_ipx.sipx_zero[0] = '\0';
169 ipx_ipx.sipx_zero[1] = '\0';
170 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
173 for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa != NULL;
174 ifa = TAILQ_NEXT(ifa, ifa_link)) {
175 if (ifa->ifa_addr->sa_family == AF_IPX) {
176 ipx_ipx.sipx_addr.x_net =
177 IA_SIPX(ifa)->sipx_addr.x_net;
182 ipxp->ipxp_rpt = ipx->ipx_pt;
183 if ((ipxp->ipxp_flags & IPXP_RAWIN) == 0) {
184 m->m_len -= sizeof(struct ipx);
185 m->m_pkthdr.len -= sizeof(struct ipx);
186 m->m_data += sizeof(struct ipx);
188 if (sbappendaddr(&ipxp->ipxp_socket->so_rcv,
189 (struct sockaddr *)&ipx_ipx, m, NULL) == 0)
192 sorwakeup(ipxp->ipxp_socket);
196 * Drop connection, reporting
197 * the specified error.
200 ipx_drop(struct ipxpcb *ipxp, int errno)
202 struct socket *so = ipxp->ipxp_socket;
204 IPX_LIST_LOCK_ASSERT();
205 IPX_LOCK_ASSERT(ipxp);
208 * someday, in the IPX world
209 * we will generate error protocol packets
210 * announcing that the socket has gone away.
212 * XXX Probably never. IPX does not have error packets.
214 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
215 tp->t_state = TCPS_CLOSED;
218 so->so_error = errno;
219 ipx_pcbdisconnect(ipxp);
220 soisdisconnected(so);
224 ipx_output(struct ipxpcb *ipxp, struct mbuf *m0)
231 struct mbuf *mprev = NULL;
233 IPX_LOCK_ASSERT(ipxp);
236 * Calculate data length.
238 for (m = m0; m != NULL; m = m->m_next) {
243 * Make sure packet is actually of even length.
248 if ((m->m_flags & M_EXT) == 0 &&
249 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
250 mtod(m, char*)[m->m_len++] = 0;
252 struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
259 * mtod(m1, char *) = 0;
266 * Fill in mbuf with extended IPX header
267 * and addresses and length put into network format.
270 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
271 ipx = mtod(m, struct ipx *);
273 M_PREPEND(m, sizeof(struct ipx), M_DONTWAIT);
276 ipx = mtod(m, struct ipx *);
278 ipx->ipx_pt = ipxp->ipxp_dpt;
279 ipx->ipx_sna = ipxp->ipxp_laddr;
280 ipx->ipx_dna = ipxp->ipxp_faddr;
281 len += sizeof(struct ipx);
284 ipx->ipx_len = htons((u_short)len);
286 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
287 ipx->ipx_sum = ipx_cksum(m, len);
289 ipx->ipx_sum = 0xffff;
294 so = ipxp->ipxp_socket;
295 if (so->so_options & SO_DONTROUTE)
296 return (ipx_outputfl(m, (struct route *)NULL,
297 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
299 * Use cached route for previous datagram if
300 * possible. If the previous net was the same
301 * and the interface was a broadcast medium, or
302 * if the previous destination was identical,
305 * NB: We don't handle broadcasts because that
306 * would require 3 subroutine calls.
308 ro = &ipxp->ipxp_route;
309 #ifdef ancient_history
311 * I think that this will all be handled in ipx_pcbconnect!
313 if (ro->ro_rt != NULL) {
314 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
316 * This assumes we have no GH type routes
318 if (ro->ro_rt->rt_flags & RTF_HOST) {
319 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
323 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
324 struct ipx_addr *dst =
325 &satoipx_addr(ro->ro_dst);
326 dst->x_host = ipx->ipx_dna.x_host;
329 * Otherwise, we go through the same gateway
330 * and dst is already set up.
338 ipxp->ipxp_lastdst = ipx->ipx_dna;
339 #endif /* ancient_history */
340 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
344 ipx_ctloutput(struct socket *so, struct sockopt *sopt)
346 struct ipxpcb *ipxp = sotoipxpcb(so);
347 int mask, error, optval;
352 KASSERT(ipxp != NULL, ("ipx_ctloutput: ipxp == NULL"));
355 switch (sopt->sopt_dir) {
357 switch (sopt->sopt_name) {
359 mask = IPXP_ALL_PACKETS;
362 case SO_HEADERS_ON_INPUT:
366 case SO_IPX_CHECKSUM:
367 mask = IPXP_CHECKSUM;
370 case SO_HEADERS_ON_OUTPUT:
374 soptval = ipxp->ipxp_flags & mask;
375 error = sooptcopyout(sopt, &soptval, sizeof soptval);
378 case SO_DEFAULT_HEADERS:
383 ioptval.ipx_pt = ipxp->ipxp_dpt;
384 ioptval.ipx_dna = ipxp->ipxp_faddr;
385 ioptval.ipx_sna = ipxp->ipxp_laddr;
387 error = sooptcopyout(sopt, &soptval, sizeof soptval);
395 error = sooptcopyout(sopt, &seq, sizeof seq);
404 switch (sopt->sopt_name) {
406 mask = IPXP_ALL_PACKETS;
409 case SO_HEADERS_ON_INPUT:
413 case SO_IPX_CHECKSUM:
414 mask = IPXP_CHECKSUM;
417 case SO_HEADERS_ON_OUTPUT:
420 error = sooptcopyin(sopt, &optval, sizeof optval,
426 ipxp->ipxp_flags |= mask;
428 ipxp->ipxp_flags &= ~mask;
432 case SO_DEFAULT_HEADERS:
433 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
437 /* Unlocked write. */
438 ipxp->ipxp_dpt = ioptval.ipx_pt;
449 ipx_usr_abort(struct socket *so)
452 /* XXXRW: Possibly ipx_disconnect() here? */
453 soisdisconnected(so);
457 ipx_attach(struct socket *so, int proto, struct thread *td)
460 struct ipxpcb *ipxp = sotoipxpcb(so);
464 KASSERT(ipxp == NULL, ("ipx_attach: ipxp != NULL"));
465 error = soreserve(so, ipxsendspace, ipxrecvspace);
469 error = ipx_pcballoc(so, &ipxpcb_list, td);
475 ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
477 struct ipxpcb *ipxp = sotoipxpcb(so);
480 KASSERT(ipxp != NULL, ("ipx_bind: ipxp == NULL"));
483 error = ipx_pcbbind(ipxp, nam, td);
490 ipx_usr_close(struct socket *so)
493 /* XXXRW: Possibly ipx_disconnect() here? */
494 soisdisconnected(so);
498 ipx_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
500 struct ipxpcb *ipxp = sotoipxpcb(so);
503 KASSERT(ipxp != NULL, ("ipx_connect: ipxp == NULL"));
506 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
510 error = ipx_pcbconnect(ipxp, nam, td);
520 ipx_detach(struct socket *so)
522 struct ipxpcb *ipxp = sotoipxpcb(so);
524 /* XXXRW: Should assert detached. */
525 KASSERT(ipxp != NULL, ("ipx_detach: ipxp == NULL"));
534 ipx_disconnect(struct socket *so)
536 struct ipxpcb *ipxp = sotoipxpcb(so);
539 KASSERT(ipxp != NULL, ("ipx_disconnect: ipxp == NULL"));
543 if (ipx_nullhost(ipxp->ipxp_faddr)) {
547 ipx_pcbdisconnect(ipxp);
548 soisdisconnected(so);
556 ipx_peeraddr(struct socket *so, struct sockaddr **nam)
558 struct ipxpcb *ipxp = sotoipxpcb(so);
560 KASSERT(ipxp != NULL, ("ipx_peeraddr: ipxp == NULL"));
561 ipx_getpeeraddr(ipxp, nam);
566 ipx_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
567 struct mbuf *control, struct thread *td)
570 struct ipxpcb *ipxp = sotoipxpcb(so);
571 struct ipx_addr laddr;
573 KASSERT(ipxp != NULL, ("ipxp_send: ipxp == NULL"));
575 * Attempt to only acquire the necessary locks: if the socket is
576 * already connected, we don't need to hold the IPX list lock to be
577 * used by ipx_pcbconnect() and ipx_pcbdisconnect(), just the IPX
583 laddr = ipxp->ipxp_laddr;
584 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
591 * Must block input while temporarily connected.
593 error = ipx_pcbconnect(ipxp, nam, td);
601 if (ipx_nullhost(ipxp->ipxp_faddr)) {
607 error = ipx_output(ipxp, m);
610 ipx_pcbdisconnect(ipxp);
611 ipxp->ipxp_laddr = laddr;
628 KASSERT(so->so_pcb != NULL, ("ipx_shutdown: so_pcb == NULL"));
634 ipx_sockaddr(struct socket *so, struct sockaddr **nam)
636 struct ipxpcb *ipxp = sotoipxpcb(so);
638 KASSERT(ipxp != NULL, ("ipx_sockaddr: ipxp == NULL"));
639 ipx_getsockaddr(ipxp, nam);
644 ripx_attach(struct socket *so, int proto, struct thread *td)
647 struct ipxpcb *ipxp = sotoipxpcb(so);
649 KASSERT(ipxp == NULL, ("ripx_attach: ipxp != NULL"));
652 error = priv_check(td, PRIV_NETIPX_RAW);
658 * We hold the IPX list lock for the duration as address parameters
659 * of the IPX pcb are changed. Since no one else holds a reference
660 * to the ipxpcb yet, we don't need the ipxpcb lock here.
663 error = ipx_pcballoc(so, &ipxrawpcb_list, td);
666 ipxp = sotoipxpcb(so);
667 error = soreserve(so, ipxsendspace, ipxrecvspace);
670 ipxp->ipxp_faddr.x_host = ipx_broadhost;
671 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;