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 1.8 2004/04/22 05:09:49 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)
62 MALLOC(ipxp, struct ipxpcb *, sizeof *ipxp, M_PCB,
63 M_WAITOK | M_ZERO | M_NULLOK);
66 ipxp->ipxp_socket = so;
68 ipxp->ipxp_flags |= IPXP_CHECKSUM;
70 so->so_pcb = (caddr_t)ipxp;
75 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
77 struct sockaddr_ipx *sipx;
80 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
84 sipx = (struct sockaddr_ipx *)nam;
85 if (!ipx_nullhost(sipx->sipx_addr)) {
86 int tport = sipx->sipx_port;
88 sipx->sipx_port = 0; /* yech... */
89 if (ifa_ifwithaddr((struct sockaddr *)sipx) == 0)
90 return (EADDRNOTAVAIL);
91 sipx->sipx_port = tport;
93 lport = sipx->sipx_port;
95 u_short aport = ntohs(lport);
98 if (aport < IPXPORT_RESERVED &&
99 td != NULL && (error = suser(td)) != 0)
101 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
104 ipxp->ipxp_laddr = sipx->sipx_addr;
109 if ((ipxpcb.ipxp_lport < IPXPORT_RESERVED) ||
110 (ipxpcb.ipxp_lport >= IPXPORT_WELLKNOWN))
111 ipxpcb.ipxp_lport = IPXPORT_RESERVED;
112 lport = htons(ipxpcb.ipxp_lport);
113 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
114 ipxp->ipxp_lport = lport;
119 * Connect from a socket to a specified address.
120 * Both address and port must be specified in argument sipx.
121 * If don't have a local address for this socket yet,
125 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
127 struct ipx_ifaddr *ia;
128 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
129 struct ipx_addr *dst;
135 if (sipx->sipx_family != AF_IPX)
136 return (EAFNOSUPPORT);
137 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
138 return (EADDRNOTAVAIL);
140 * If we haven't bound which network number to use as ours,
141 * we will use the number of the outgoing interface.
142 * This depends on having done a routing lookup, which
143 * we will probably have to do anyway, so we might
144 * as well do it now. On the other hand if we are
145 * sending to multiple destinations we may have already
146 * done the lookup, so see if we can use the route
147 * from before. In any case, we only
148 * chose a port number once, even if sending to multiple
151 ro = &ipxp->ipxp_route;
152 dst = &satoipx_addr(ro->ro_dst);
153 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
155 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
157 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
158 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
159 /* can patch route to avoid rtalloc */
160 *dst = sipx->sipx_addr;
163 if (ro->ro_rt != NULL)
167 }/* else cached route is ok; do nothing */
168 ipxp->ipxp_lastdst = sipx->sipx_addr;
169 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
170 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
171 /* No route yet, so try to acquire one */
172 ro->ro_dst.sa_family = AF_IPX;
173 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
174 *dst = sipx->sipx_addr;
178 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
180 * If route is known or can be allocated now,
181 * our src addr is taken from the i/f, else punt.
185 * If we found a route, use the address
186 * corresponding to the outgoing interface
188 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
189 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
190 if (ia->ia_ifp == ifp)
193 u_short fport = sipx->sipx_addr.x_port;
194 sipx->sipx_addr.x_port = 0;
195 ia = (struct ipx_ifaddr *)
196 ifa_ifwithdstaddr((struct sockaddr *)sipx);
197 sipx->sipx_addr.x_port = fport;
199 ia = ipx_iaonnetof(&sipx->sipx_addr);
203 return (EADDRNOTAVAIL);
205 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
207 if (ipx_nullhost(ipxp->ipxp_laddr)) {
209 * If route is known or can be allocated now,
210 * our src addr is taken from the i/f, else punt.
214 * If we found a route, use the address
215 * corresponding to the outgoing interface
217 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
218 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
219 if (ia->ia_ifp == ifp)
222 u_short fport = sipx->sipx_addr.x_port;
223 sipx->sipx_addr.x_port = 0;
224 ia = (struct ipx_ifaddr *)
225 ifa_ifwithdstaddr((struct sockaddr *)sipx);
226 sipx->sipx_addr.x_port = fport;
228 ia = ipx_iaonnetof(&sipx->sipx_addr);
232 return (EADDRNOTAVAIL);
234 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
236 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
238 if (ipxp->ipxp_lport == 0)
239 ipx_pcbbind(ipxp, (struct sockaddr *)NULL, td);
241 /* XXX just leave it zero if we can't find a route */
243 ipxp->ipxp_faddr = sipx->sipx_addr;
244 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
249 ipx_pcbdisconnect(ipxp)
253 ipxp->ipxp_faddr = zeroipx_addr;
254 if (ipxp->ipxp_socket->so_state & SS_NOFDREF)
262 struct socket *so = ipxp->ipxp_socket;
266 if (ipxp->ipxp_route.ro_rt != NULL)
267 rtfree(ipxp->ipxp_route.ro_rt);
273 ipx_setsockaddr(struct ipxpcb *ipxp, struct sockaddr **nam)
275 struct sockaddr_ipx *sipx, ssipx;
278 bzero((caddr_t)sipx, sizeof(*sipx));
279 sipx->sipx_len = sizeof(*sipx);
280 sipx->sipx_family = AF_IPX;
281 sipx->sipx_addr = ipxp->ipxp_laddr;
282 *nam = dup_sockaddr((struct sockaddr *)sipx, 0);
286 ipx_setpeeraddr(ipxp, nam)
288 struct sockaddr **nam;
290 struct sockaddr_ipx *sipx, ssipx;
293 bzero((caddr_t)sipx, sizeof(*sipx));
294 sipx->sipx_len = sizeof(*sipx);
295 sipx->sipx_family = AF_IPX;
296 sipx->sipx_addr = ipxp->ipxp_faddr;
297 *nam = dup_sockaddr((struct sockaddr *)sipx, 0);
301 * Pass some notification to all connections of a protocol
302 * associated with address dst. Call the
303 * protocol specific routine to handle each connection.
304 * Also pass an extra paramter via the ipxpcb. (which may in fact
305 * be a parameter list!)
308 ipx_pcbnotify(dst, errno, notify, param)
309 struct ipx_addr *dst;
311 void (*notify)(struct ipxpcb *);
314 struct ipxpcb *ipxp, *oinp;
317 for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb);) {
318 if (!ipx_hosteq(*dst,ipxp->ipxp_faddr)) {
320 ipxp = ipxp->ipxp_next;
323 if (ipxp->ipxp_socket == 0)
326 ipxp->ipxp_socket->so_error = errno;
328 ipxp = ipxp->ipxp_next;
329 oinp->ipxp_notify_param = param;
337 * After a routing change, flush old routing
338 * and allocate a (hopefully) better one.
343 if (ipxp->ipxp_route.ro_rt != NULL) {
344 rtfree(ipxp->ipxp_route.ro_rt);
345 ipxp->ipxp_route.ro_rt = NULL;
347 * A new route can be allocated the next time
348 * output is attempted.
351 /* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
356 ipx_pcblookup(faddr, lport, wildp)
357 struct ipx_addr *faddr;
361 struct ipxpcb *ipxp, *match = 0;
362 int matchwild = 3, wildcard;
365 fport = faddr->x_port;
366 for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb); ipxp = ipxp->ipxp_next) {
367 if (ipxp->ipxp_lport != lport)
370 if (ipx_nullhost(ipxp->ipxp_faddr)) {
371 if (!ipx_nullhost(*faddr))
374 if (ipx_nullhost(*faddr))
377 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
379 if (ipxp->ipxp_fport != fport) {
380 if (ipxp->ipxp_fport != 0)
387 if (wildcard && wildp == 0)
389 if (wildcard < matchwild) {
391 matchwild = wildcard;