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/socketvar2.h>
52 #include <sys/sysctl.h>
54 #include <sys/thread2.h>
55 #include <sys/msgport2.h>
58 #include <net/route.h>
60 #include <netinet/in.h>
69 * IPX protocol implementation.
72 static int ipxsendspace = IPXSNDQ;
73 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
74 &ipxsendspace, 0, "");
75 static int ipxrecvspace = IPXRCVQ;
76 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
77 &ipxrecvspace, 0, "");
79 static void ipx_usr_abort(netmsg_t msg);
80 static void ipx_attach(netmsg_t msg);
81 static void ipx_bind(netmsg_t msg);
82 static void ipx_connect(netmsg_t msg);
83 /*static void ipx_control(netmsg_t msg);*/
84 static void ipx_detach(netmsg_t msg);
85 static void ipx_disconnect(netmsg_t msg);
86 /*static void ipx_peeraddr(netmsg_t msg);*/
87 static void ipx_send(netmsg_t msg);
88 static void ipx_shutdown(netmsg_t msg);
89 /*static void ipx_sockaddr(netmsg_t msg);*/
90 static void ripx_attach(netmsg_t msg);
92 struct pr_usrreqs ipx_usrreqs = {
93 .pru_abort = ipx_usr_abort,
94 .pru_accept = pr_generic_notsupp,
95 .pru_attach = ipx_attach,
97 .pru_connect = ipx_connect,
98 .pru_connect2 = pr_generic_notsupp,
99 .pru_control = ipx_control,
100 .pru_detach = ipx_detach,
101 .pru_disconnect = ipx_disconnect,
102 .pru_listen = pr_generic_notsupp,
103 .pru_peeraddr = ipx_peeraddr,
104 .pru_rcvd = pr_generic_notsupp,
105 .pru_rcvoob = pr_generic_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
114 struct pr_usrreqs ripx_usrreqs = {
115 .pru_abort = ipx_usr_abort,
116 .pru_accept = pr_generic_notsupp,
117 .pru_attach = ripx_attach,
118 .pru_bind = ipx_bind,
119 .pru_connect = ipx_connect,
120 .pru_connect2 = pr_generic_notsupp,
121 .pru_control = ipx_control,
122 .pru_detach = ipx_detach,
123 .pru_disconnect = ipx_disconnect,
124 .pru_listen = pr_generic_notsupp,
125 .pru_peeraddr = ipx_peeraddr,
126 .pru_rcvd = pr_generic_notsupp,
127 .pru_rcvoob = pr_generic_notsupp,
128 .pru_send = ipx_send,
129 .pru_sense = pru_sense_null,
130 .pru_shutdown = ipx_shutdown,
131 .pru_sockaddr = ipx_sockaddr,
132 .pru_sosend = sosend,
133 .pru_soreceive = soreceive
137 * This may also be called for raw listeners.
140 ipx_input(struct mbuf *m, struct ipxpcb *ipxp)
142 struct ipx *ipx = mtod(m, struct ipx *);
143 struct ifnet *ifp = m->m_pkthdr.rcvif;
144 struct sockaddr_ipx ipx_ipx;
149 * Construct sockaddr format source address.
150 * Stuff source address and datagram in user buffer.
152 ipx_ipx.sipx_len = sizeof(ipx_ipx);
153 ipx_ipx.sipx_family = AF_IPX;
154 ipx_ipx.sipx_addr = ipx->ipx_sna;
155 ipx_ipx.sipx_zero[0] = '\0';
156 ipx_ipx.sipx_zero[1] = '\0';
157 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
158 struct ifaddr_container *ifac;
160 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
161 struct ifaddr *ifa = ifac->ifa;
163 if (ifa->ifa_addr->sa_family == AF_IPX) {
164 ipx_ipx.sipx_addr.x_net =
165 IA_SIPX(ifa)->sipx_addr.x_net;
170 ipxp->ipxp_rpt = ipx->ipx_pt;
171 if (!(ipxp->ipxp_flags & IPXP_RAWIN) ) {
172 m->m_len -= sizeof(struct ipx);
173 m->m_pkthdr.len -= sizeof(struct ipx);
174 m->m_data += sizeof(struct ipx);
176 if (ssb_appendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx,
179 sorwakeup(ipxp->ipxp_socket);
186 ipx_abort(struct ipxpcb *ipxp)
188 struct socket *so = ipxp->ipxp_socket;
191 ipx_pcbdisconnect(ipxp);
192 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;
218 ipx_pcbdisconnect(ipxp);
219 soisdisconnected(so);
224 ipx_output(struct ipxpcb *ipxp, struct mbuf *m0)
231 struct mbuf *mprev = NULL;
234 * Calculate data length.
236 for (m = m0; m != NULL; m = m->m_next) {
241 * Make sure packet is actually of even length.
246 if ((m->m_flags & M_EXT) == 0 &&
247 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
248 mtod(m, char*)[m->m_len++] = 0;
250 struct mbuf *m1 = m_get(MB_DONTWAIT, MT_DATA);
257 * mtod(m1, char *) = 0;
264 * Fill in mbuf with extended IPX header
265 * and addresses and length put into network format.
268 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
269 ipx = mtod(m, struct ipx *);
271 M_PREPEND(m, sizeof(struct ipx), MB_DONTWAIT);
274 ipx = mtod(m, struct ipx *);
276 ipx->ipx_pt = ipxp->ipxp_dpt;
277 ipx->ipx_sna = ipxp->ipxp_laddr;
278 ipx->ipx_dna = ipxp->ipxp_faddr;
279 len += sizeof(struct ipx);
282 ipx->ipx_len = htons((u_short)len);
284 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
285 ipx->ipx_sum = ipx_cksum(m, len);
287 ipx->ipx_sum = 0xffff;
292 so = ipxp->ipxp_socket;
293 if (so->so_options & SO_DONTROUTE)
294 return (ipx_outputfl(m, NULL,
295 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
297 * Use cached route for previous datagram if
298 * possible. If the previous net was the same
299 * and the interface was a broadcast medium, or
300 * if the previous destination was identical,
303 * NB: We don't handle broadcasts because that
304 * would require 3 subroutine calls.
306 ro = &ipxp->ipxp_route;
307 #ifdef ancient_history
309 * I think that this will all be handled in ipx_pcbconnect!
311 if (ro->ro_rt != NULL) {
312 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
314 * This assumes we have no GH type routes
316 if (ro->ro_rt->rt_flags & RTF_HOST) {
317 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
321 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
322 struct ipx_addr *dst =
323 &satoipx_addr(ro->ro_dst);
324 dst->x_host = ipx->ipx_dna.x_host;
327 * Otherwise, we go through the same gateway
328 * and dst is already set up.
336 ipxp->ipxp_lastdst = ipx->ipx_dna;
337 #endif /* ancient_history */
338 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
342 ipx_ctloutput(netmsg_t msg)
344 struct socket *so = msg->base.nm_so;
345 struct sockopt *sopt = msg->ctloutput.nm_sopt;
346 struct ipxpcb *ipxp = sotoipxpcb(so);
347 int mask, error, optval;
357 switch (sopt->sopt_dir) {
359 switch (sopt->sopt_name) {
361 mask = IPXP_ALL_PACKETS;
364 case SO_HEADERS_ON_INPUT:
368 case SO_IPX_CHECKSUM:
369 mask = IPXP_CHECKSUM;
372 case SO_HEADERS_ON_OUTPUT:
375 soptval = ipxp->ipxp_flags & mask;
376 error = sooptcopyout(sopt, &soptval, sizeof soptval);
379 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;
386 error = sooptcopyout(sopt, &soptval, sizeof soptval);
390 error = sooptcopyout(sopt, &ipx_pexseq,
401 switch (sopt->sopt_name) {
403 mask = IPXP_ALL_PACKETS;
406 case SO_HEADERS_ON_INPUT:
410 case SO_IPX_CHECKSUM:
411 mask = IPXP_CHECKSUM;
413 case SO_HEADERS_ON_OUTPUT:
416 error = sooptcopyin(sopt, &optval, sizeof optval,
421 ipxp->ipxp_flags |= mask;
423 ipxp->ipxp_flags &= ~mask;
426 case SO_DEFAULT_HEADERS:
427 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
431 ipxp->ipxp_dpt = ioptval.ipx_pt;
435 error = ipxip_route(so, sopt);
440 case SO_IPXTUNNEL_ROUTE:
441 error = ipxtun_route(so, sopt);
451 lwkt_replymsg(&msg->lmsg, error);
455 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
456 * will sofree() it when we return.
459 ipx_usr_abort(netmsg_t msg)
461 struct socket *so = msg->base.nm_so;
462 struct ipxpcb *ipxp = sotoipxpcb(so);
465 soisdisconnected(so);
467 lwkt_replymsg(&msg->lmsg, 0);
471 ipx_attach(netmsg_t msg)
473 struct socket *so = msg->base.nm_so;
474 struct pru_attach_info *ai = msg->attach.nm_ai;
475 struct ipxpcb *ipxp = sotoipxpcb(so);
481 error = ipx_pcballoc(so, &ipxpcb_list);
483 error = soreserve(so, ipxsendspace, ipxrecvspace,
487 lwkt_replymsg(&msg->lmsg, error);
491 ipx_bind(netmsg_t msg)
493 struct socket *so = msg->base.nm_so;
494 struct ipxpcb *ipxp = sotoipxpcb(so);
497 error = ipx_pcbbind(ipxp, msg->bind.nm_nam, msg->bind.nm_td);
498 lwkt_replymsg(&msg->lmsg, error);
502 ipx_connect(netmsg_t msg)
504 struct socket *so = msg->base.nm_so;
505 struct ipxpcb *ipxp = sotoipxpcb(so);
508 if (ipx_nullhost(ipxp->ipxp_faddr)) {
509 error = ipx_pcbconnect(ipxp,
517 lwkt_replymsg(&msg->lmsg, error);
521 ipx_control(netmsg_t msg)
525 error = ipx_control_oncpu(msg->base.nm_so,
527 msg->control.nm_data,
530 lwkt_replymsg(&msg->lmsg, error);
534 ipx_detach(netmsg_t msg)
536 struct socket *so = msg->base.nm_so;
537 struct ipxpcb *ipxp = sotoipxpcb(so);
546 lwkt_replymsg(&msg->lmsg, error);
550 ipx_disconnect(netmsg_t msg)
552 struct socket *so = msg->base.nm_so;
553 struct ipxpcb *ipxp = sotoipxpcb(so);
556 if (ipx_nullhost(ipxp->ipxp_faddr)) {
560 ipx_pcbdisconnect(ipxp);
561 soisdisconnected(so);
565 lwkt_replymsg(&msg->lmsg, error);
569 ipx_peeraddr(netmsg_t msg)
571 struct socket *so = msg->base.nm_so;
572 struct ipxpcb *ipxp = sotoipxpcb(so);
574 ipx_setpeeraddr(ipxp, msg->peeraddr.nm_nam);
575 lwkt_replymsg(&msg->lmsg, 0);
579 ipx_send(netmsg_t msg)
581 struct socket *so = msg->base.nm_so;
582 struct mbuf *m = msg->send.nm_m;
583 struct sockaddr *nam = msg->send.nm_addr;
584 struct mbuf *control = msg->send.nm_control;
585 struct thread *td = msg->send.nm_td;
586 struct ipxpcb *ipxp = sotoipxpcb(so);
587 struct ipx_addr laddr;
596 laddr = ipxp->ipxp_laddr;
597 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
602 * Must block input while temporarily connected.
604 error = ipx_pcbconnect(ipxp, nam, td);
609 if (ipx_nullhost(ipxp->ipxp_faddr)) {
614 error = ipx_output(ipxp, m);
617 ipx_pcbdisconnect(ipxp);
618 ipxp->ipxp_laddr = laddr;
623 lwkt_replymsg(&msg->lmsg, error);
627 ipx_shutdown(netmsg_t msg)
629 struct socket *so = msg->base.nm_so;
633 lwkt_replymsg(&msg->lmsg, 0);
637 ipx_sockaddr(netmsg_t msg)
639 struct socket *so = msg->base.nm_so;
640 struct ipxpcb *ipxp = sotoipxpcb(so);
642 /* XXX what if alloc fails? */
643 ipx_setsockaddr(ipxp, msg->sockaddr.nm_nam);
644 lwkt_replymsg(&msg->lmsg, 0);
648 ripx_attach(netmsg_t msg)
650 struct socket *so = msg->base.nm_so;
651 struct pru_attach_info *ai = msg->attach.nm_ai;
655 error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY);
658 error = ipx_pcballoc(so, &ipxrawpcb_list);
661 error = soreserve(so, ipxsendspace, ipxrecvspace, ai->sb_rlimit);
664 ipxp = sotoipxpcb(so);
665 ipxp->ipxp_faddr.x_host = ipx_broadhost;
666 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;
668 lwkt_replymsg(&msg->lmsg, error);