2 * Copyright (c) 1984, 1985, 1986, 1987, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 2004-2009 Robert N. M. Watson
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 4. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Copyright (c) 1995, Mike Mitchell
32 * All rights reserved.
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. All advertising materials mentioning features or use of this software
43 * must display the following acknowledgement:
44 * This product includes software developed by the University of
45 * California, Berkeley and its contributors.
46 * 4. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD$");
68 #include <sys/param.h>
69 #include <sys/systm.h>
70 #include <sys/malloc.h>
72 #include <sys/socket.h>
73 #include <sys/socketvar.h>
76 #include <net/if_var.h>
77 #include <net/route.h>
79 #include <netipx/ipx.h>
80 #include <netipx/ipx_if.h>
81 #include <netipx/ipx_pcb.h>
82 #include <netipx/ipx_var.h>
84 static struct ipx_addr zeroipx_addr;
85 static u_short ipxpcb_lport_cache;
88 ipx_pcballoc(struct socket *so, struct ipxpcbhead *head, struct thread *td)
92 KASSERT(so->so_pcb == NULL, ("ipx_pcballoc: so_pcb != NULL"));
93 IPX_LIST_LOCK_ASSERT();
95 ipxp = malloc(sizeof *ipxp, M_PCB, M_NOWAIT | M_ZERO);
99 ipxp->ipxp_socket = so;
101 ipxp->ipxp_flags |= IPXP_CHECKSUM;
102 LIST_INSERT_HEAD(head, ipxp, ipxp_list);
103 so->so_pcb = (caddr_t)ipxp;
108 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
110 struct sockaddr_ipx *sipx;
113 IPX_LIST_LOCK_ASSERT();
114 IPX_LOCK_ASSERT(ipxp);
116 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
120 sipx = (struct sockaddr_ipx *)nam;
121 if (!ipx_nullhost(sipx->sipx_addr)) {
122 int tport = sipx->sipx_port;
124 sipx->sipx_port = 0; /* yech... */
125 if (ifa_ifwithaddr_check((struct sockaddr *)sipx) == 0)
126 return (EADDRNOTAVAIL);
127 sipx->sipx_port = tport;
129 lport = sipx->sipx_port;
131 u_short aport = ntohs(lport);
133 if (aport < IPXPORT_RESERVED && td != NULL &&
134 priv_check(td, PRIV_NETIPX_RESERVEDPORT))
136 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
139 ipxp->ipxp_laddr = sipx->sipx_addr;
143 ipxpcb_lport_cache++;
144 if ((ipxpcb_lport_cache < IPXPORT_RESERVED) ||
145 (ipxpcb_lport_cache >= IPXPORT_WELLKNOWN))
146 ipxpcb_lport_cache = IPXPORT_RESERVED;
147 lport = htons(ipxpcb_lport_cache);
148 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
149 ipxp->ipxp_lport = lport;
154 * Connect from a socket to a specified address.
155 * Both address and port must be specified in argument sipx.
156 * If don't have a local address for this socket yet,
160 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
162 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
163 struct ipx_addr *dst;
167 IPX_LIST_LOCK_ASSERT();
168 IPX_LOCK_ASSERT(ipxp);
170 if (sipx->sipx_family != AF_IPX)
171 return (EAFNOSUPPORT);
172 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
173 return (EADDRNOTAVAIL);
175 * If we haven't bound which network number to use as ours,
176 * we will use the number of the outgoing interface.
177 * This depends on having done a routing lookup, which
178 * we will probably have to do anyway, so we might
179 * as well do it now. On the other hand if we are
180 * sending to multiple destinations we may have already
181 * done the lookup, so see if we can use the route
182 * from before. In any case, we only
183 * chose a port number once, even if sending to multiple
186 ro = &ipxp->ipxp_route;
187 dst = &satoipx_addr(ro->ro_dst);
188 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
190 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
192 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
193 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
194 /* can patch route to avoid rtalloc */
195 *dst = sipx->sipx_addr;
198 if (ro->ro_rt != NULL)
202 }/* else cached route is ok; do nothing */
203 ipxp->ipxp_lastdst = sipx->sipx_addr;
204 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
205 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
206 /* No route yet, so try to acquire one */
207 ro->ro_dst.sa_family = AF_IPX;
208 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
209 *dst = sipx->sipx_addr;
213 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
214 struct ipx_ifaddr *ia = NULL;
217 * If route is known or can be allocated now,
218 * our src addr is taken from the i/f, else punt.
222 * If we found a route, use the address
223 * corresponding to the outgoing interface
225 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL) {
227 TAILQ_FOREACH(ia, &ipx_ifaddrhead, ia_link) {
228 if (ia->ia_ifp == ifp) {
229 ifa_ref(&ia->ia_ifa);
233 IPX_IFADDR_RUNLOCK();
236 u_short fport = sipx->sipx_addr.x_port;
237 sipx->sipx_addr.x_port = 0;
238 ia = (struct ipx_ifaddr *)
239 ifa_ifwithdstaddr((struct sockaddr *)sipx);
240 sipx->sipx_addr.x_port = fport;
243 ia = ipx_iaonnetof(&sipx->sipx_addr);
245 ifa_ref(&ia->ia_ifa);
246 IPX_IFADDR_RUNLOCK();
250 ia = TAILQ_FIRST(&ipx_ifaddrhead);
252 ifa_ref(&ia->ia_ifa);
253 IPX_IFADDR_RUNLOCK();
256 return (EADDRNOTAVAIL);
258 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
259 ifa_free(&ia->ia_ifa);
261 if (ipx_nullhost(ipxp->ipxp_laddr)) {
262 struct ipx_ifaddr *ia = NULL;
264 * If route is known or can be allocated now,
265 * our src addr is taken from the i/f, else punt.
269 * If we found a route, use the address
270 * corresponding to the outgoing interface
272 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL) {
274 TAILQ_FOREACH(ia, &ipx_ifaddrhead, ia_link) {
275 if (ia->ia_ifp == ifp) {
276 ifa_ref(&ia->ia_ifa);
280 IPX_IFADDR_RUNLOCK();
283 u_short fport = sipx->sipx_addr.x_port;
284 sipx->sipx_addr.x_port = 0;
285 ia = (struct ipx_ifaddr *)
286 ifa_ifwithdstaddr((struct sockaddr *)sipx);
287 sipx->sipx_addr.x_port = fport;
290 ia = ipx_iaonnetof(&sipx->sipx_addr);
292 ifa_ref(&ia->ia_ifa);
293 IPX_IFADDR_RUNLOCK();
297 ia = TAILQ_FIRST(&ipx_ifaddrhead);
299 ifa_ref(&ia->ia_ifa);
300 IPX_IFADDR_RUNLOCK();
303 return (EADDRNOTAVAIL);
305 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
306 ifa_free(&ia->ia_ifa);
308 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
310 if (ipxp->ipxp_lport == 0)
311 ipx_pcbbind(ipxp, (struct sockaddr *)NULL, td);
313 /* XXX just leave it zero if we can't find a route */
315 ipxp->ipxp_faddr = sipx->sipx_addr;
316 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
321 ipx_pcbdisconnect(struct ipxpcb *ipxp)
324 IPX_LIST_LOCK_ASSERT();
325 IPX_LOCK_ASSERT(ipxp);
327 ipxp->ipxp_faddr = zeroipx_addr;
331 ipx_pcbdetach(struct ipxpcb *ipxp)
333 struct socket *so = ipxp->ipxp_socket;
335 IPX_LIST_LOCK_ASSERT();
336 IPX_LOCK_ASSERT(ipxp);
339 ipxp->ipxp_socket = NULL;
343 ipx_pcbfree(struct ipxpcb *ipxp)
346 KASSERT(ipxp->ipxp_socket == NULL,
347 ("ipx_pcbfree: ipxp_socket != NULL"));
348 IPX_LIST_LOCK_ASSERT();
349 IPX_LOCK_ASSERT(ipxp);
351 if (ipxp->ipxp_route.ro_rt != NULL)
352 RTFREE(ipxp->ipxp_route.ro_rt);
353 LIST_REMOVE(ipxp, ipxp_list);
354 IPX_LOCK_DESTROY(ipxp);
359 ipx_getsockaddr(struct ipxpcb *ipxp, struct sockaddr **nam)
361 struct sockaddr_ipx *sipx, ssipx;
364 bzero((caddr_t)sipx, sizeof(*sipx));
365 sipx->sipx_len = sizeof(*sipx);
366 sipx->sipx_family = AF_IPX;
368 sipx->sipx_addr = ipxp->ipxp_laddr;
370 *nam = sodupsockaddr((struct sockaddr *)sipx, M_WAITOK);
374 ipx_getpeeraddr(struct ipxpcb *ipxp, struct sockaddr **nam)
376 struct sockaddr_ipx *sipx, ssipx;
379 bzero(sipx, sizeof(*sipx));
380 sipx->sipx_len = sizeof(*sipx);
381 sipx->sipx_family = AF_IPX;
383 sipx->sipx_addr = ipxp->ipxp_faddr;
385 *nam = sodupsockaddr((struct sockaddr *)sipx, M_WAITOK);
389 ipx_pcblookup(struct ipx_addr *faddr, u_short lport, int wildp)
391 struct ipxpcb *ipxp, *match = NULL;
392 int matchwild = 3, wildcard;
395 IPX_LIST_LOCK_ASSERT();
397 fport = faddr->x_port;
398 LIST_FOREACH(ipxp, &ipxpcb_list, ipxp_list) {
399 if (ipxp->ipxp_lport != lport)
402 if (ipx_nullhost(ipxp->ipxp_faddr)) {
403 if (!ipx_nullhost(*faddr))
406 if (ipx_nullhost(*faddr))
409 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
411 if (ipxp->ipxp_fport != fport) {
412 if (ipxp->ipxp_fport != 0)
419 if (wildcard && wildp == 0)
421 if (wildcard < matchwild) {
423 matchwild = wildcard;