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 1.9 2005/06/10 22:34:49 dillon 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 ipx_usr_abort, pru_accept_notsupp, ipx_attach, ipx_bind,
94 ipx_connect, pru_connect2_notsupp, ipx_control, ipx_detach,
95 ipx_disconnect, pru_listen_notsupp, ipx_peeraddr, pru_rcvd_notsupp,
96 pru_rcvoob_notsupp, ipx_send, pru_sense_null, ipx_shutdown,
97 ipx_sockaddr, sosend, soreceive, sopoll
100 struct pr_usrreqs ripx_usrreqs = {
101 ipx_usr_abort, pru_accept_notsupp, ripx_attach, ipx_bind,
102 ipx_connect, pru_connect2_notsupp, ipx_control, ipx_detach,
103 ipx_disconnect, pru_listen_notsupp, ipx_peeraddr, pru_rcvd_notsupp,
104 pru_rcvoob_notsupp, ipx_send, pru_sense_null, ipx_shutdown,
105 ipx_sockaddr, sosend, soreceive, sopoll
109 * This may also be called for raw listeners.
116 struct ipx *ipx = mtod(m, struct ipx *);
117 struct ifnet *ifp = m->m_pkthdr.rcvif;
118 struct sockaddr_ipx ipx_ipx;
123 * Construct sockaddr format source address.
124 * Stuff source address and datagram in user buffer.
126 ipx_ipx.sipx_len = sizeof(ipx_ipx);
127 ipx_ipx.sipx_family = AF_IPX;
128 ipx_ipx.sipx_addr = ipx->ipx_sna;
129 ipx_ipx.sipx_zero[0] = '\0';
130 ipx_ipx.sipx_zero[1] = '\0';
131 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
134 for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa != NULL;
135 ifa = TAILQ_NEXT(ifa, ifa_link)) {
136 if (ifa->ifa_addr->sa_family == AF_IPX) {
137 ipx_ipx.sipx_addr.x_net =
138 IA_SIPX(ifa)->sipx_addr.x_net;
143 ipxp->ipxp_rpt = ipx->ipx_pt;
144 if (!(ipxp->ipxp_flags & IPXP_RAWIN) ) {
145 m->m_len -= sizeof(struct ipx);
146 m->m_pkthdr.len -= sizeof(struct ipx);
147 m->m_data += sizeof(struct ipx);
149 if (sbappendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
150 m, (struct mbuf *)NULL) == 0)
152 sorwakeup(ipxp->ipxp_socket);
162 struct socket *so = ipxp->ipxp_socket;
164 ipx_pcbdisconnect(ipxp);
165 soisdisconnected(so);
169 * Drop connection, reporting
170 * the specified error.
173 ipx_drop(ipxp, errno)
177 struct socket *so = ipxp->ipxp_socket;
180 * someday, in the IPX world
181 * we will generate error protocol packets
182 * announcing that the socket has gone away.
184 * XXX Probably never. IPX does not have error packets.
186 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
187 tp->t_state = TCPS_CLOSED;
190 so->so_error = errno;
191 ipx_pcbdisconnect(ipxp);
192 soisdisconnected(so);
205 struct mbuf *mprev = NULL;
208 * Calculate data length.
210 for (m = m0; m != NULL; m = m->m_next) {
215 * Make sure packet is actually of even length.
220 if ((m->m_flags & M_EXT) == 0 &&
221 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
222 mtod(m, char*)[m->m_len++] = 0;
224 struct mbuf *m1 = m_get(MB_DONTWAIT, MT_DATA);
231 * mtod(m1, char *) = 0;
238 * Fill in mbuf with extended IPX header
239 * and addresses and length put into network format.
242 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
243 ipx = mtod(m, struct ipx *);
245 M_PREPEND(m, sizeof(struct ipx), MB_DONTWAIT);
248 ipx = mtod(m, struct ipx *);
250 ipx->ipx_pt = ipxp->ipxp_dpt;
251 ipx->ipx_sna = ipxp->ipxp_laddr;
252 ipx->ipx_dna = ipxp->ipxp_faddr;
253 len += sizeof(struct ipx);
256 ipx->ipx_len = htons((u_short)len);
258 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
259 ipx->ipx_sum = ipx_cksum(m, len);
261 ipx->ipx_sum = 0xffff;
266 so = ipxp->ipxp_socket;
267 if (so->so_options & SO_DONTROUTE)
268 return (ipx_outputfl(m, (struct route *)NULL,
269 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
271 * Use cached route for previous datagram if
272 * possible. If the previous net was the same
273 * and the interface was a broadcast medium, or
274 * if the previous destination was identical,
277 * NB: We don't handle broadcasts because that
278 * would require 3 subroutine calls.
280 ro = &ipxp->ipxp_route;
281 #ifdef ancient_history
283 * I think that this will all be handled in ipx_pcbconnect!
285 if (ro->ro_rt != NULL) {
286 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
288 * This assumes we have no GH type routes
290 if (ro->ro_rt->rt_flags & RTF_HOST) {
291 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
295 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
296 struct ipx_addr *dst =
297 &satoipx_addr(ro->ro_dst);
298 dst->x_host = ipx->ipx_dna.x_host;
301 * Otherwise, we go through the same gateway
302 * and dst is already set up.
310 ipxp->ipxp_lastdst = ipx->ipx_dna;
311 #endif /* ancient_history */
312 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
316 ipx_ctloutput(so, sopt)
318 struct sockopt *sopt;
320 struct ipxpcb *ipxp = sotoipxpcb(so);
321 int mask, error, optval;
329 switch (sopt->sopt_dir) {
331 switch (sopt->sopt_name) {
333 mask = IPXP_ALL_PACKETS;
336 case SO_HEADERS_ON_INPUT:
340 case SO_IPX_CHECKSUM:
341 mask = IPXP_CHECKSUM;
344 case SO_HEADERS_ON_OUTPUT:
347 soptval = ipxp->ipxp_flags & mask;
348 error = sooptcopyout(sopt, &soptval, sizeof soptval);
351 case SO_DEFAULT_HEADERS:
355 ioptval.ipx_pt = ipxp->ipxp_dpt;
356 ioptval.ipx_dna = ipxp->ipxp_faddr;
357 ioptval.ipx_sna = ipxp->ipxp_laddr;
358 error = sooptcopyout(sopt, &soptval, sizeof soptval);
362 error = sooptcopyout(sopt, &ipx_pexseq,
373 switch (sopt->sopt_name) {
375 mask = IPXP_ALL_PACKETS;
378 case SO_HEADERS_ON_INPUT:
382 case SO_IPX_CHECKSUM:
383 mask = IPXP_CHECKSUM;
385 case SO_HEADERS_ON_OUTPUT:
388 error = sooptcopyin(sopt, &optval, sizeof optval,
393 ipxp->ipxp_flags |= mask;
395 ipxp->ipxp_flags &= ~mask;
398 case SO_DEFAULT_HEADERS:
399 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
403 ipxp->ipxp_dpt = ioptval.ipx_pt;
407 error = ipxip_route(so, sopt);
412 case SO_IPXTUNNEL_ROUTE:
413 error = ipxtun_route(so, sopt);
429 struct ipxpcb *ipxp = sotoipxpcb(so);
435 soisdisconnected(so);
440 ipx_attach(struct socket *so, int proto, struct pru_attach_info *ai)
443 struct ipxpcb *ipxp = sotoipxpcb(so);
448 error = ipx_pcballoc(so, &ipxpcb);
451 error = soreserve(so, ipxsendspace, ipxrecvspace,
457 ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
459 struct ipxpcb *ipxp = sotoipxpcb(so);
461 return (ipx_pcbbind(ipxp, nam, td));
465 ipx_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
468 struct ipxpcb *ipxp = sotoipxpcb(so);
470 if (!ipx_nullhost(ipxp->ipxp_faddr))
473 error = ipx_pcbconnect(ipxp, nam, td);
484 struct ipxpcb *ipxp = sotoipxpcb(so);
498 struct ipxpcb *ipxp = sotoipxpcb(so);
500 if (ipx_nullhost(ipxp->ipxp_faddr))
503 ipx_pcbdisconnect(ipxp);
505 soisdisconnected(so);
510 ipx_peeraddr(so, nam)
512 struct sockaddr **nam;
514 struct ipxpcb *ipxp = sotoipxpcb(so);
516 ipx_setpeeraddr(ipxp, nam);
521 ipx_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
522 struct mbuf *control, struct thread *td)
525 struct ipxpcb *ipxp = sotoipxpcb(so);
526 struct ipx_addr laddr;
530 laddr = ipxp->ipxp_laddr;
531 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
536 * Must block input while temporarily connected.
538 error = ipx_pcbconnect(ipxp, nam, td);
543 if (ipx_nullhost(ipxp->ipxp_faddr)) {
548 error = ipx_output(ipxp, m);
551 ipx_pcbdisconnect(ipxp);
552 ipxp->ipxp_laddr = laddr;
570 ipx_sockaddr(so, nam)
572 struct sockaddr **nam;
574 struct ipxpcb *ipxp = sotoipxpcb(so);
576 ipx_setsockaddr(ipxp, nam); /* XXX what if alloc fails? */
581 ripx_attach(struct socket *so, int proto, struct pru_attach_info *ai)
584 struct ipxpcb *ipxp = sotoipxpcb(so);
586 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0)
589 error = ipx_pcballoc(so, &ipxrawpcb);
593 error = soreserve(so, ipxsendspace, ipxrecvspace, ai->sb_rlimit);
596 ipxp = sotoipxpcb(so);
597 ipxp->ipxp_faddr.x_host = ipx_broadhost;
598 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;