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_pcb.c,v 1.18.2.1 2001/02/22 09:44:18 bp Exp $
37 * $DragonFly: src/sys/netproto/ipx/ipx_pcb.c,v 1.6 2003/08/07 21:17:37 dillon Exp $
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/malloc.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
48 #include <net/route.h>
55 static struct ipx_addr zeroipx_addr;
58 ipx_pcballoc(struct socket *so, struct ipxpcb *head, struct thread *td)
62 MALLOC(ipxp, struct ipxpcb *, sizeof *ipxp, M_PCB, M_NOWAIT | M_ZERO);
65 ipxp->ipxp_socket = so;
67 ipxp->ipxp_flags |= IPXP_CHECKSUM;
69 so->so_pcb = (caddr_t)ipxp;
74 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
76 struct sockaddr_ipx *sipx;
79 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
83 sipx = (struct sockaddr_ipx *)nam;
84 if (!ipx_nullhost(sipx->sipx_addr)) {
85 int tport = sipx->sipx_port;
87 sipx->sipx_port = 0; /* yech... */
88 if (ifa_ifwithaddr((struct sockaddr *)sipx) == 0)
89 return (EADDRNOTAVAIL);
90 sipx->sipx_port = tport;
92 lport = sipx->sipx_port;
94 u_short aport = ntohs(lport);
97 if (aport < IPXPORT_RESERVED &&
98 td != NULL && (error = suser(td)) != 0)
100 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
103 ipxp->ipxp_laddr = sipx->sipx_addr;
108 if ((ipxpcb.ipxp_lport < IPXPORT_RESERVED) ||
109 (ipxpcb.ipxp_lport >= IPXPORT_WELLKNOWN))
110 ipxpcb.ipxp_lport = IPXPORT_RESERVED;
111 lport = htons(ipxpcb.ipxp_lport);
112 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
113 ipxp->ipxp_lport = lport;
118 * Connect from a socket to a specified address.
119 * Both address and port must be specified in argument sipx.
120 * If don't have a local address for this socket yet,
124 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
126 struct ipx_ifaddr *ia;
127 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
128 struct ipx_addr *dst;
134 if (sipx->sipx_family != AF_IPX)
135 return (EAFNOSUPPORT);
136 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
137 return (EADDRNOTAVAIL);
139 * If we haven't bound which network number to use as ours,
140 * we will use the number of the outgoing interface.
141 * This depends on having done a routing lookup, which
142 * we will probably have to do anyway, so we might
143 * as well do it now. On the other hand if we are
144 * sending to multiple destinations we may have already
145 * done the lookup, so see if we can use the route
146 * from before. In any case, we only
147 * chose a port number once, even if sending to multiple
150 ro = &ipxp->ipxp_route;
151 dst = &satoipx_addr(ro->ro_dst);
152 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
154 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
156 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
157 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
158 /* can patch route to avoid rtalloc */
159 *dst = sipx->sipx_addr;
162 if (ro->ro_rt != NULL)
166 }/* else cached route is ok; do nothing */
167 ipxp->ipxp_lastdst = sipx->sipx_addr;
168 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
169 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
170 /* No route yet, so try to acquire one */
171 ro->ro_dst.sa_family = AF_IPX;
172 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
173 *dst = sipx->sipx_addr;
177 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
179 * If route is known or can be allocated now,
180 * our src addr is taken from the i/f, else punt.
184 * If we found a route, use the address
185 * corresponding to the outgoing interface
187 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
188 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
189 if (ia->ia_ifp == ifp)
192 u_short fport = sipx->sipx_addr.x_port;
193 sipx->sipx_addr.x_port = 0;
194 ia = (struct ipx_ifaddr *)
195 ifa_ifwithdstaddr((struct sockaddr *)sipx);
196 sipx->sipx_addr.x_port = fport;
198 ia = ipx_iaonnetof(&sipx->sipx_addr);
202 return (EADDRNOTAVAIL);
204 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
206 if (ipx_nullhost(ipxp->ipxp_laddr)) {
208 * If route is known or can be allocated now,
209 * our src addr is taken from the i/f, else punt.
213 * If we found a route, use the address
214 * corresponding to the outgoing interface
216 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
217 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
218 if (ia->ia_ifp == ifp)
221 u_short fport = sipx->sipx_addr.x_port;
222 sipx->sipx_addr.x_port = 0;
223 ia = (struct ipx_ifaddr *)
224 ifa_ifwithdstaddr((struct sockaddr *)sipx);
225 sipx->sipx_addr.x_port = fport;
227 ia = ipx_iaonnetof(&sipx->sipx_addr);
231 return (EADDRNOTAVAIL);
233 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
235 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
237 if (ipxp->ipxp_lport == 0)
238 ipx_pcbbind(ipxp, (struct sockaddr *)NULL, td);
240 /* XXX just leave it zero if we can't find a route */
242 ipxp->ipxp_faddr = sipx->sipx_addr;
243 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
248 ipx_pcbdisconnect(ipxp)
252 ipxp->ipxp_faddr = zeroipx_addr;
253 if (ipxp->ipxp_socket->so_state & SS_NOFDREF)
261 struct socket *so = ipxp->ipxp_socket;
265 if (ipxp->ipxp_route.ro_rt != NULL)
266 rtfree(ipxp->ipxp_route.ro_rt);
272 ipx_setsockaddr(struct ipxpcb *ipxp, struct sockaddr **nam)
274 struct sockaddr_ipx *sipx, ssipx;
277 bzero((caddr_t)sipx, sizeof(*sipx));
278 sipx->sipx_len = sizeof(*sipx);
279 sipx->sipx_family = AF_IPX;
280 sipx->sipx_addr = ipxp->ipxp_laddr;
281 *nam = dup_sockaddr((struct sockaddr *)sipx, 0);
285 ipx_setpeeraddr(ipxp, nam)
287 struct sockaddr **nam;
289 struct sockaddr_ipx *sipx, ssipx;
292 bzero((caddr_t)sipx, sizeof(*sipx));
293 sipx->sipx_len = sizeof(*sipx);
294 sipx->sipx_family = AF_IPX;
295 sipx->sipx_addr = ipxp->ipxp_faddr;
296 *nam = dup_sockaddr((struct sockaddr *)sipx, 0);
300 * Pass some notification to all connections of a protocol
301 * associated with address dst. Call the
302 * protocol specific routine to handle each connection.
303 * Also pass an extra paramter via the ipxpcb. (which may in fact
304 * be a parameter list!)
307 ipx_pcbnotify(dst, errno, notify, param)
308 struct ipx_addr *dst;
310 void (*notify)(struct ipxpcb *);
313 struct ipxpcb *ipxp, *oinp;
316 for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb);) {
317 if (!ipx_hosteq(*dst,ipxp->ipxp_faddr)) {
319 ipxp = ipxp->ipxp_next;
322 if (ipxp->ipxp_socket == 0)
325 ipxp->ipxp_socket->so_error = errno;
327 ipxp = ipxp->ipxp_next;
328 oinp->ipxp_notify_param = param;
336 * After a routing change, flush old routing
337 * and allocate a (hopefully) better one.
342 if (ipxp->ipxp_route.ro_rt != NULL) {
343 rtfree(ipxp->ipxp_route.ro_rt);
344 ipxp->ipxp_route.ro_rt = NULL;
346 * A new route can be allocated the next time
347 * output is attempted.
350 /* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
355 ipx_pcblookup(faddr, lport, wildp)
356 struct ipx_addr *faddr;
360 struct ipxpcb *ipxp, *match = 0;
361 int matchwild = 3, wildcard;
364 fport = faddr->x_port;
365 for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb); ipxp = ipxp->ipxp_next) {
366 if (ipxp->ipxp_lport != lport)
369 if (ipx_nullhost(ipxp->ipxp_faddr)) {
370 if (!ipx_nullhost(*faddr))
373 if (ipx_nullhost(*faddr))
376 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
378 if (ipxp->ipxp_fport != fport) {
379 if (ipxp->ipxp_fport != 0)
386 if (wildcard && wildp == 0)
388 if (wildcard < matchwild) {
390 matchwild = wildcard;