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
36 * $FreeBSD: src/sys/netipx/ipx_usrreq.c,v 1.26.2.1 2001/02/22 09:44:18 bp Exp $
37 * $DragonFly: src/sys/netproto/ipx/ipx_usrreq.c,v 1.13 2008/03/07 11:34:21 sephe Exp $
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
47 #include <sys/protosw.h>
48 #include <sys/socket.h>
49 #include <sys/socketvar.h>
50 #include <sys/sysctl.h>
51 #include <sys/thread2.h>
54 #include <net/route.h>
56 #include <netinet/in.h>
65 * IPX protocol implementation.
68 static int ipxsendspace = IPXSNDQ;
69 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
70 &ipxsendspace, 0, "");
71 static int ipxrecvspace = IPXRCVQ;
72 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
73 &ipxrecvspace, 0, "");
75 static int ipx_usr_abort(struct socket *so);
76 static int ipx_attach(struct socket *so, int proto,
77 struct pru_attach_info *ai);
78 static int ipx_bind(struct socket *so, struct sockaddr *nam,
80 static int ipx_connect(struct socket *so, struct sockaddr *nam,
82 static int ipx_detach(struct socket *so);
83 static int ipx_disconnect(struct socket *so);
84 static int ipx_send(struct socket *so, int flags, struct mbuf *m,
85 struct sockaddr *addr, struct mbuf *control,
87 static int ipx_shutdown(struct socket *so);
88 static int ripx_attach(struct socket *so, int proto,
89 struct pru_attach_info *ai);
90 static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
92 struct pr_usrreqs ipx_usrreqs = {
93 .pru_abort = ipx_usr_abort,
94 .pru_accept = pru_accept_notsupp,
95 .pru_attach = ipx_attach,
97 .pru_connect = ipx_connect,
98 .pru_connect2 = pru_connect2_notsupp,
99 .pru_control = ipx_control,
100 .pru_detach = ipx_detach,
101 .pru_disconnect = ipx_disconnect,
102 .pru_listen = pru_listen_notsupp,
103 .pru_peeraddr = ipx_peeraddr,
104 .pru_rcvd = pru_rcvd_notsupp,
105 .pru_rcvoob = pru_rcvoob_notsupp,
106 .pru_send = ipx_send,
107 .pru_sense = pru_sense_null,
108 .pru_shutdown = ipx_shutdown,
109 .pru_sockaddr = ipx_sockaddr,
110 .pru_sosend = sosend,
111 .pru_soreceive = soreceive,
115 struct pr_usrreqs ripx_usrreqs = {
116 .pru_abort = ipx_usr_abort,
117 .pru_accept = pru_accept_notsupp,
118 .pru_attach = ripx_attach,
119 .pru_bind = ipx_bind,
120 .pru_connect = ipx_connect,
121 .pru_connect2 = pru_connect2_notsupp,
122 .pru_control = ipx_control,
123 .pru_detach = ipx_detach,
124 .pru_disconnect = ipx_disconnect,
125 .pru_listen = pru_listen_notsupp,
126 .pru_peeraddr = ipx_peeraddr,
127 .pru_rcvd = pru_rcvd_notsupp,
128 .pru_rcvoob = pru_rcvoob_notsupp,
129 .pru_send = ipx_send,
130 .pru_sense = pru_sense_null,
131 .pru_shutdown = ipx_shutdown,
132 .pru_sockaddr = ipx_sockaddr,
133 .pru_sosend = sosend,
134 .pru_soreceive = soreceive,
139 * This may also be called for raw listeners.
142 ipx_input(struct mbuf *m, struct ipxpcb *ipxp)
144 struct ipx *ipx = mtod(m, struct ipx *);
145 struct ifnet *ifp = m->m_pkthdr.rcvif;
146 struct sockaddr_ipx ipx_ipx;
151 * Construct sockaddr format source address.
152 * Stuff source address and datagram in user buffer.
154 ipx_ipx.sipx_len = sizeof(ipx_ipx);
155 ipx_ipx.sipx_family = AF_IPX;
156 ipx_ipx.sipx_addr = ipx->ipx_sna;
157 ipx_ipx.sipx_zero[0] = '\0';
158 ipx_ipx.sipx_zero[1] = '\0';
159 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
160 struct ifaddr_container *ifac;
162 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
163 struct ifaddr *ifa = ifac->ifa;
165 if (ifa->ifa_addr->sa_family == AF_IPX) {
166 ipx_ipx.sipx_addr.x_net =
167 IA_SIPX(ifa)->sipx_addr.x_net;
172 ipxp->ipxp_rpt = ipx->ipx_pt;
173 if (!(ipxp->ipxp_flags & IPXP_RAWIN) ) {
174 m->m_len -= sizeof(struct ipx);
175 m->m_pkthdr.len -= sizeof(struct ipx);
176 m->m_data += sizeof(struct ipx);
178 if (ssb_appendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
179 m, (struct mbuf *)NULL) == 0)
181 sorwakeup(ipxp->ipxp_socket);
188 ipx_abort(struct ipxpcb *ipxp)
190 struct socket *so = ipxp->ipxp_socket;
192 ipx_pcbdisconnect(ipxp);
193 soisdisconnected(so);
197 * Drop connection, reporting
198 * the specified error.
201 ipx_drop(struct ipxpcb *ipxp, int errno)
203 struct socket *so = ipxp->ipxp_socket;
206 * someday, in the IPX world
207 * we will generate error protocol packets
208 * announcing that the socket has gone away.
210 * XXX Probably never. IPX does not have error packets.
212 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
213 tp->t_state = TCPS_CLOSED;
216 so->so_error = errno;
217 ipx_pcbdisconnect(ipxp);
218 soisdisconnected(so);
222 ipx_output(struct ipxpcb *ipxp, struct mbuf *m0)
229 struct mbuf *mprev = NULL;
232 * Calculate data length.
234 for (m = m0; m != NULL; m = m->m_next) {
239 * Make sure packet is actually of even length.
244 if ((m->m_flags & M_EXT) == 0 &&
245 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
246 mtod(m, char*)[m->m_len++] = 0;
248 struct mbuf *m1 = m_get(MB_DONTWAIT, MT_DATA);
255 * mtod(m1, char *) = 0;
262 * Fill in mbuf with extended IPX header
263 * and addresses and length put into network format.
266 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
267 ipx = mtod(m, struct ipx *);
269 M_PREPEND(m, sizeof(struct ipx), MB_DONTWAIT);
272 ipx = mtod(m, struct ipx *);
274 ipx->ipx_pt = ipxp->ipxp_dpt;
275 ipx->ipx_sna = ipxp->ipxp_laddr;
276 ipx->ipx_dna = ipxp->ipxp_faddr;
277 len += sizeof(struct ipx);
280 ipx->ipx_len = htons((u_short)len);
282 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
283 ipx->ipx_sum = ipx_cksum(m, len);
285 ipx->ipx_sum = 0xffff;
290 so = ipxp->ipxp_socket;
291 if (so->so_options & SO_DONTROUTE)
292 return (ipx_outputfl(m, (struct route *)NULL,
293 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
295 * Use cached route for previous datagram if
296 * possible. If the previous net was the same
297 * and the interface was a broadcast medium, or
298 * if the previous destination was identical,
301 * NB: We don't handle broadcasts because that
302 * would require 3 subroutine calls.
304 ro = &ipxp->ipxp_route;
305 #ifdef ancient_history
307 * I think that this will all be handled in ipx_pcbconnect!
309 if (ro->ro_rt != NULL) {
310 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
312 * This assumes we have no GH type routes
314 if (ro->ro_rt->rt_flags & RTF_HOST) {
315 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
319 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
320 struct ipx_addr *dst =
321 &satoipx_addr(ro->ro_dst);
322 dst->x_host = ipx->ipx_dna.x_host;
325 * Otherwise, we go through the same gateway
326 * and dst is already set up.
334 ipxp->ipxp_lastdst = ipx->ipx_dna;
335 #endif /* ancient_history */
336 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
340 ipx_ctloutput(struct socket *so, struct sockopt *sopt)
342 struct ipxpcb *ipxp = sotoipxpcb(so);
343 int mask, error, optval;
351 switch (sopt->sopt_dir) {
353 switch (sopt->sopt_name) {
355 mask = IPXP_ALL_PACKETS;
358 case SO_HEADERS_ON_INPUT:
362 case SO_IPX_CHECKSUM:
363 mask = IPXP_CHECKSUM;
366 case SO_HEADERS_ON_OUTPUT:
369 soptval = ipxp->ipxp_flags & mask;
370 error = sooptcopyout(sopt, &soptval, sizeof soptval);
373 case SO_DEFAULT_HEADERS:
377 ioptval.ipx_pt = ipxp->ipxp_dpt;
378 ioptval.ipx_dna = ipxp->ipxp_faddr;
379 ioptval.ipx_sna = ipxp->ipxp_laddr;
380 error = sooptcopyout(sopt, &soptval, sizeof soptval);
384 error = sooptcopyout(sopt, &ipx_pexseq,
395 switch (sopt->sopt_name) {
397 mask = IPXP_ALL_PACKETS;
400 case SO_HEADERS_ON_INPUT:
404 case SO_IPX_CHECKSUM:
405 mask = IPXP_CHECKSUM;
407 case SO_HEADERS_ON_OUTPUT:
410 error = sooptcopyin(sopt, &optval, sizeof optval,
415 ipxp->ipxp_flags |= mask;
417 ipxp->ipxp_flags &= ~mask;
420 case SO_DEFAULT_HEADERS:
421 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
425 ipxp->ipxp_dpt = ioptval.ipx_pt;
429 error = ipxip_route(so, sopt);
434 case SO_IPXTUNNEL_ROUTE:
435 error = ipxtun_route(so, sopt);
448 ipx_usr_abort(struct socket *so)
450 struct ipxpcb *ipxp = sotoipxpcb(so);
456 soisdisconnected(so);
461 ipx_attach(struct socket *so, int proto, struct pru_attach_info *ai)
464 struct ipxpcb *ipxp = sotoipxpcb(so);
469 error = ipx_pcballoc(so, &ipxpcb);
472 error = soreserve(so, ipxsendspace, ipxrecvspace,
478 ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
480 struct ipxpcb *ipxp = sotoipxpcb(so);
482 return (ipx_pcbbind(ipxp, nam, td));
486 ipx_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
489 struct ipxpcb *ipxp = sotoipxpcb(so);
491 if (!ipx_nullhost(ipxp->ipxp_faddr))
494 error = ipx_pcbconnect(ipxp, nam, td);
502 ipx_detach(struct socket *so)
504 struct ipxpcb *ipxp = sotoipxpcb(so);
515 ipx_disconnect(struct socket *so)
517 struct ipxpcb *ipxp = sotoipxpcb(so);
519 if (ipx_nullhost(ipxp->ipxp_faddr))
522 ipx_pcbdisconnect(ipxp);
524 soisdisconnected(so);
529 ipx_peeraddr(struct socket *so, struct sockaddr **nam)
531 struct ipxpcb *ipxp = sotoipxpcb(so);
533 ipx_setpeeraddr(ipxp, nam);
538 ipx_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
539 struct mbuf *control, struct thread *td)
542 struct ipxpcb *ipxp = sotoipxpcb(so);
543 struct ipx_addr laddr;
547 laddr = ipxp->ipxp_laddr;
548 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
553 * Must block input while temporarily connected.
555 error = ipx_pcbconnect(ipxp, nam, td);
560 if (ipx_nullhost(ipxp->ipxp_faddr)) {
565 error = ipx_output(ipxp, m);
568 ipx_pcbdisconnect(ipxp);
569 ipxp->ipxp_laddr = laddr;
579 ipx_shutdown(struct socket *so)
586 ipx_sockaddr(struct socket *so, struct sockaddr **nam)
588 struct ipxpcb *ipxp = sotoipxpcb(so);
590 ipx_setsockaddr(ipxp, nam); /* XXX what if alloc fails? */
595 ripx_attach(struct socket *so, int proto, struct pru_attach_info *ai)
600 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0)
603 error = ipx_pcballoc(so, &ipxrawpcb);
607 error = soreserve(so, ipxsendspace, ipxrecvspace, ai->sb_rlimit);
610 ipxp = sotoipxpcb(so);
611 ipxp->ipxp_faddr.x_host = ipx_broadhost;
612 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;