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>
48 #include <sys/protosw.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/sysctl.h>
52 #include <sys/thread2.h>
55 #include <net/route.h>
57 #include <netinet/in.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,
78 struct pru_attach_info *ai);
79 static int ipx_bind(struct socket *so, struct sockaddr *nam,
81 static int ipx_connect(struct socket *so, struct sockaddr *nam,
83 static int ipx_detach(struct socket *so);
84 static int ipx_disconnect(struct socket *so);
85 static int ipx_send(struct socket *so, int flags, struct mbuf *m,
86 struct sockaddr *addr, struct mbuf *control,
88 static int ipx_shutdown(struct socket *so);
89 static int ripx_attach(struct socket *so, int proto,
90 struct pru_attach_info *ai);
91 static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
93 struct pr_usrreqs ipx_usrreqs = {
94 .pru_abort = ipx_usr_abort,
95 .pru_accept = pru_accept_notsupp,
96 .pru_attach = ipx_attach,
98 .pru_connect = ipx_connect,
99 .pru_connect2 = pru_connect2_notsupp,
100 .pru_control = ipx_control,
101 .pru_detach = ipx_detach,
102 .pru_disconnect = ipx_disconnect,
103 .pru_listen = pru_listen_notsupp,
104 .pru_peeraddr = ipx_peeraddr,
105 .pru_rcvd = pru_rcvd_notsupp,
106 .pru_rcvoob = pru_rcvoob_notsupp,
107 .pru_send = ipx_send,
108 .pru_sense = pru_sense_null,
109 .pru_shutdown = ipx_shutdown,
110 .pru_sockaddr = ipx_sockaddr,
111 .pru_sosend = sosend,
112 .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
138 * This may also be called for raw listeners.
141 ipx_input(struct mbuf *m, struct ipxpcb *ipxp)
143 struct ipx *ipx = mtod(m, struct ipx *);
144 struct ifnet *ifp = m->m_pkthdr.rcvif;
145 struct sockaddr_ipx ipx_ipx;
150 * Construct sockaddr format source address.
151 * Stuff source address and datagram in user buffer.
153 ipx_ipx.sipx_len = sizeof(ipx_ipx);
154 ipx_ipx.sipx_family = AF_IPX;
155 ipx_ipx.sipx_addr = ipx->ipx_sna;
156 ipx_ipx.sipx_zero[0] = '\0';
157 ipx_ipx.sipx_zero[1] = '\0';
158 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
159 struct ifaddr_container *ifac;
161 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
162 struct ifaddr *ifa = ifac->ifa;
164 if (ifa->ifa_addr->sa_family == AF_IPX) {
165 ipx_ipx.sipx_addr.x_net =
166 IA_SIPX(ifa)->sipx_addr.x_net;
171 ipxp->ipxp_rpt = ipx->ipx_pt;
172 if (!(ipxp->ipxp_flags & IPXP_RAWIN) ) {
173 m->m_len -= sizeof(struct ipx);
174 m->m_pkthdr.len -= sizeof(struct ipx);
175 m->m_data += sizeof(struct ipx);
177 if (ssb_appendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
180 sorwakeup(ipxp->ipxp_socket);
187 ipx_abort(struct ipxpcb *ipxp)
189 struct socket *so = ipxp->ipxp_socket;
192 ipx_pcbdisconnect(ipxp);
193 soisdisconnected(so);
198 * Drop connection, reporting
199 * the specified error.
202 ipx_drop(struct ipxpcb *ipxp, int errno)
204 struct socket *so = ipxp->ipxp_socket;
207 * someday, in the IPX world
208 * we will generate error protocol packets
209 * announcing that the socket has gone away.
211 * XXX Probably never. IPX does not have error packets.
213 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
214 tp->t_state = TCPS_CLOSED;
217 so->so_error = errno;
219 ipx_pcbdisconnect(ipxp);
220 soisdisconnected(so);
225 ipx_output(struct ipxpcb *ipxp, struct mbuf *m0)
232 struct mbuf *mprev = NULL;
235 * Calculate data length.
237 for (m = m0; m != NULL; m = m->m_next) {
242 * Make sure packet is actually of even length.
247 if ((m->m_flags & M_EXT) == 0 &&
248 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
249 mtod(m, char*)[m->m_len++] = 0;
251 struct mbuf *m1 = m_get(MB_DONTWAIT, MT_DATA);
258 * mtod(m1, char *) = 0;
265 * Fill in mbuf with extended IPX header
266 * and addresses and length put into network format.
269 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
270 ipx = mtod(m, struct ipx *);
272 M_PREPEND(m, sizeof(struct ipx), MB_DONTWAIT);
275 ipx = mtod(m, struct ipx *);
277 ipx->ipx_pt = ipxp->ipxp_dpt;
278 ipx->ipx_sna = ipxp->ipxp_laddr;
279 ipx->ipx_dna = ipxp->ipxp_faddr;
280 len += sizeof(struct ipx);
283 ipx->ipx_len = htons((u_short)len);
285 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
286 ipx->ipx_sum = ipx_cksum(m, len);
288 ipx->ipx_sum = 0xffff;
293 so = ipxp->ipxp_socket;
294 if (so->so_options & SO_DONTROUTE)
295 return (ipx_outputfl(m, NULL,
296 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
298 * Use cached route for previous datagram if
299 * possible. If the previous net was the same
300 * and the interface was a broadcast medium, or
301 * if the previous destination was identical,
304 * NB: We don't handle broadcasts because that
305 * would require 3 subroutine calls.
307 ro = &ipxp->ipxp_route;
308 #ifdef ancient_history
310 * I think that this will all be handled in ipx_pcbconnect!
312 if (ro->ro_rt != NULL) {
313 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
315 * This assumes we have no GH type routes
317 if (ro->ro_rt->rt_flags & RTF_HOST) {
318 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
322 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
323 struct ipx_addr *dst =
324 &satoipx_addr(ro->ro_dst);
325 dst->x_host = ipx->ipx_dna.x_host;
328 * Otherwise, we go through the same gateway
329 * and dst is already set up.
337 ipxp->ipxp_lastdst = ipx->ipx_dna;
338 #endif /* ancient_history */
339 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
343 ipx_ctloutput(struct socket *so, struct sockopt *sopt)
345 struct ipxpcb *ipxp = sotoipxpcb(so);
346 int mask, error, optval;
354 switch (sopt->sopt_dir) {
356 switch (sopt->sopt_name) {
358 mask = IPXP_ALL_PACKETS;
361 case SO_HEADERS_ON_INPUT:
365 case SO_IPX_CHECKSUM:
366 mask = IPXP_CHECKSUM;
369 case SO_HEADERS_ON_OUTPUT:
372 soptval = ipxp->ipxp_flags & mask;
373 error = sooptcopyout(sopt, &soptval, sizeof soptval);
376 case SO_DEFAULT_HEADERS:
380 ioptval.ipx_pt = ipxp->ipxp_dpt;
381 ioptval.ipx_dna = ipxp->ipxp_faddr;
382 ioptval.ipx_sna = ipxp->ipxp_laddr;
383 error = sooptcopyout(sopt, &soptval, sizeof soptval);
387 error = sooptcopyout(sopt, &ipx_pexseq,
398 switch (sopt->sopt_name) {
400 mask = IPXP_ALL_PACKETS;
403 case SO_HEADERS_ON_INPUT:
407 case SO_IPX_CHECKSUM:
408 mask = IPXP_CHECKSUM;
410 case SO_HEADERS_ON_OUTPUT:
413 error = sooptcopyin(sopt, &optval, sizeof optval,
418 ipxp->ipxp_flags |= mask;
420 ipxp->ipxp_flags &= ~mask;
423 case SO_DEFAULT_HEADERS:
424 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
428 ipxp->ipxp_dpt = ioptval.ipx_pt;
432 error = ipxip_route(so, sopt);
437 case SO_IPXTUNNEL_ROUTE:
438 error = ipxtun_route(so, sopt);
451 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
452 * will sofree() it when we return.
455 ipx_usr_abort(struct socket *so)
457 struct ipxpcb *ipxp = sotoipxpcb(so);
460 soisdisconnected(so);
466 ipx_attach(struct socket *so, int proto, struct pru_attach_info *ai)
469 struct ipxpcb *ipxp = sotoipxpcb(so);
473 error = ipx_pcballoc(so, &ipxpcb);
475 error = soreserve(so, ipxsendspace, ipxrecvspace,
481 ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
483 struct ipxpcb *ipxp = sotoipxpcb(so);
485 return (ipx_pcbbind(ipxp, nam, td));
489 ipx_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
492 struct ipxpcb *ipxp = sotoipxpcb(so);
494 if (!ipx_nullhost(ipxp->ipxp_faddr))
496 error = ipx_pcbconnect(ipxp, nam, td);
503 ipx_detach(struct socket *so)
505 struct ipxpcb *ipxp = sotoipxpcb(so);
514 ipx_disconnect(struct socket *so)
516 struct ipxpcb *ipxp = sotoipxpcb(so);
518 if (ipx_nullhost(ipxp->ipxp_faddr))
521 ipx_pcbdisconnect(ipxp);
522 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;
546 laddr = ipxp->ipxp_laddr;
547 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
552 * Must block input while temporarily connected.
554 error = ipx_pcbconnect(ipxp, nam, td);
559 if (ipx_nullhost(ipxp->ipxp_faddr)) {
564 error = ipx_output(ipxp, m);
567 ipx_pcbdisconnect(ipxp);
568 ipxp->ipxp_laddr = laddr;
577 ipx_shutdown(struct socket *so)
584 ipx_sockaddr(struct socket *so, struct sockaddr **nam)
586 struct ipxpcb *ipxp = sotoipxpcb(so);
588 ipx_setsockaddr(ipxp, nam); /* XXX what if alloc fails? */
593 ripx_attach(struct socket *so, int proto, struct pru_attach_info *ai)
598 if ((error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY)) != 0)
600 error = ipx_pcballoc(so, &ipxrawpcb);
603 error = soreserve(so, ipxsendspace, ipxrecvspace, ai->sb_rlimit);
606 ipxp = sotoipxpcb(so);
607 ipxp->ipxp_faddr.x_host = ipx_broadhost;
608 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;