2 * Copyright (c) 1984, 1985, 1986, 1987, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 2004-2006 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/route.h>
78 #include <netipx/ipx.h>
79 #include <netipx/ipx_if.h>
80 #include <netipx/ipx_pcb.h>
81 #include <netipx/ipx_var.h>
83 static struct ipx_addr zeroipx_addr;
84 static u_short ipxpcb_lport_cache;
87 ipx_pcballoc(struct socket *so, struct ipxpcbhead *head, struct thread *td)
91 KASSERT(so->so_pcb == NULL, ("ipx_pcballoc: so_pcb != NULL"));
92 IPX_LIST_LOCK_ASSERT();
94 ipxp = malloc(sizeof *ipxp, M_PCB, M_NOWAIT | M_ZERO);
98 ipxp->ipxp_socket = so;
100 ipxp->ipxp_flags |= IPXP_CHECKSUM;
101 LIST_INSERT_HEAD(head, ipxp, ipxp_list);
102 so->so_pcb = (caddr_t)ipxp;
107 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
109 struct sockaddr_ipx *sipx;
112 IPX_LIST_LOCK_ASSERT();
113 IPX_LOCK_ASSERT(ipxp);
115 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
119 sipx = (struct sockaddr_ipx *)nam;
120 if (!ipx_nullhost(sipx->sipx_addr)) {
121 int tport = sipx->sipx_port;
123 sipx->sipx_port = 0; /* yech... */
124 if (ifa_ifwithaddr_check((struct sockaddr *)sipx) == 0)
125 return (EADDRNOTAVAIL);
126 sipx->sipx_port = tport;
128 lport = sipx->sipx_port;
130 u_short aport = ntohs(lport);
132 if (aport < IPXPORT_RESERVED && td != NULL &&
133 priv_check(td, PRIV_NETIPX_RESERVEDPORT))
135 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
138 ipxp->ipxp_laddr = sipx->sipx_addr;
142 ipxpcb_lport_cache++;
143 if ((ipxpcb_lport_cache < IPXPORT_RESERVED) ||
144 (ipxpcb_lport_cache >= IPXPORT_WELLKNOWN))
145 ipxpcb_lport_cache = IPXPORT_RESERVED;
146 lport = htons(ipxpcb_lport_cache);
147 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
148 ipxp->ipxp_lport = lport;
153 * Connect from a socket to a specified address.
154 * Both address and port must be specified in argument sipx.
155 * If don't have a local address for this socket yet,
159 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
161 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
162 struct ipx_addr *dst;
166 IPX_LIST_LOCK_ASSERT();
167 IPX_LOCK_ASSERT(ipxp);
169 if (sipx->sipx_family != AF_IPX)
170 return (EAFNOSUPPORT);
171 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
172 return (EADDRNOTAVAIL);
174 * If we haven't bound which network number to use as ours,
175 * we will use the number of the outgoing interface.
176 * This depends on having done a routing lookup, which
177 * we will probably have to do anyway, so we might
178 * as well do it now. On the other hand if we are
179 * sending to multiple destinations we may have already
180 * done the lookup, so see if we can use the route
181 * from before. In any case, we only
182 * chose a port number once, even if sending to multiple
185 ro = &ipxp->ipxp_route;
186 dst = &satoipx_addr(ro->ro_dst);
187 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
189 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
191 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
192 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
193 /* can patch route to avoid rtalloc */
194 *dst = sipx->sipx_addr;
197 if (ro->ro_rt != NULL)
201 }/* else cached route is ok; do nothing */
202 ipxp->ipxp_lastdst = sipx->sipx_addr;
203 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
204 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
205 /* No route yet, so try to acquire one */
206 ro->ro_dst.sa_family = AF_IPX;
207 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
208 *dst = sipx->sipx_addr;
212 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
213 struct ipx_ifaddr *ia = NULL;
216 * If route is known or can be allocated now,
217 * our src addr is taken from the i/f, else punt.
221 * If we found a route, use the address
222 * corresponding to the outgoing interface
224 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL) {
226 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
227 if (ia->ia_ifp == ifp) {
228 ifa_ref(&ia->ia_ifa);
231 IPX_IFADDR_RUNLOCK();
234 u_short fport = sipx->sipx_addr.x_port;
235 sipx->sipx_addr.x_port = 0;
236 ia = (struct ipx_ifaddr *)
237 ifa_ifwithdstaddr((struct sockaddr *)sipx);
238 sipx->sipx_addr.x_port = fport;
241 ia = ipx_iaonnetof(&sipx->sipx_addr);
243 ifa_ref(&ia->ia_ifa);
244 IPX_IFADDR_RUNLOCK();
250 ifa_ref(&ia->ia_ifa);
251 IPX_IFADDR_RUNLOCK();
254 return (EADDRNOTAVAIL);
256 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
257 ifa_free(&ia->ia_ifa);
259 if (ipx_nullhost(ipxp->ipxp_laddr)) {
260 struct ipx_ifaddr *ia = NULL;
262 * If route is known or can be allocated now,
263 * our src addr is taken from the i/f, else punt.
267 * If we found a route, use the address
268 * corresponding to the outgoing interface
270 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL) {
272 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
273 if (ia->ia_ifp == ifp) {
274 ifa_ref(&ia->ia_ifa);
277 IPX_IFADDR_RUNLOCK();
280 u_short fport = sipx->sipx_addr.x_port;
281 sipx->sipx_addr.x_port = 0;
282 ia = (struct ipx_ifaddr *)
283 ifa_ifwithdstaddr((struct sockaddr *)sipx);
284 sipx->sipx_addr.x_port = fport;
287 ia = ipx_iaonnetof(&sipx->sipx_addr);
289 ifa_ref(&ia->ia_ifa);
290 IPX_IFADDR_RUNLOCK();
296 ifa_ref(&ia->ia_ifa);
297 IPX_IFADDR_RUNLOCK();
300 return (EADDRNOTAVAIL);
302 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
303 ifa_free(&ia->ia_ifa);
305 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
307 if (ipxp->ipxp_lport == 0)
308 ipx_pcbbind(ipxp, (struct sockaddr *)NULL, td);
310 /* XXX just leave it zero if we can't find a route */
312 ipxp->ipxp_faddr = sipx->sipx_addr;
313 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
318 ipx_pcbdisconnect(struct ipxpcb *ipxp)
321 IPX_LIST_LOCK_ASSERT();
322 IPX_LOCK_ASSERT(ipxp);
324 ipxp->ipxp_faddr = zeroipx_addr;
328 ipx_pcbdetach(struct ipxpcb *ipxp)
330 struct socket *so = ipxp->ipxp_socket;
332 IPX_LIST_LOCK_ASSERT();
333 IPX_LOCK_ASSERT(ipxp);
336 ipxp->ipxp_socket = NULL;
340 ipx_pcbfree(struct ipxpcb *ipxp)
343 KASSERT(ipxp->ipxp_socket == NULL,
344 ("ipx_pcbfree: ipxp_socket != NULL"));
345 IPX_LIST_LOCK_ASSERT();
346 IPX_LOCK_ASSERT(ipxp);
348 if (ipxp->ipxp_route.ro_rt != NULL)
349 RTFREE(ipxp->ipxp_route.ro_rt);
350 LIST_REMOVE(ipxp, ipxp_list);
351 IPX_LOCK_DESTROY(ipxp);
356 ipx_getsockaddr(struct ipxpcb *ipxp, struct sockaddr **nam)
358 struct sockaddr_ipx *sipx, ssipx;
361 bzero((caddr_t)sipx, sizeof(*sipx));
362 sipx->sipx_len = sizeof(*sipx);
363 sipx->sipx_family = AF_IPX;
365 sipx->sipx_addr = ipxp->ipxp_laddr;
367 *nam = sodupsockaddr((struct sockaddr *)sipx, M_WAITOK);
371 ipx_getpeeraddr(struct ipxpcb *ipxp, struct sockaddr **nam)
373 struct sockaddr_ipx *sipx, ssipx;
376 bzero(sipx, sizeof(*sipx));
377 sipx->sipx_len = sizeof(*sipx);
378 sipx->sipx_family = AF_IPX;
380 sipx->sipx_addr = ipxp->ipxp_faddr;
382 *nam = sodupsockaddr((struct sockaddr *)sipx, M_WAITOK);
386 ipx_pcblookup(struct ipx_addr *faddr, u_short lport, int wildp)
388 struct ipxpcb *ipxp, *match = NULL;
389 int matchwild = 3, wildcard;
392 IPX_LIST_LOCK_ASSERT();
394 fport = faddr->x_port;
395 LIST_FOREACH(ipxp, &ipxpcb_list, ipxp_list) {
396 if (ipxp->ipxp_lport != lport)
399 if (ipx_nullhost(ipxp->ipxp_faddr)) {
400 if (!ipx_nullhost(*faddr))
403 if (ipx_nullhost(*faddr))
406 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
408 if (ipxp->ipxp_fport != fport) {
409 if (ipxp->ipxp_fport != 0)
416 if (wildcard && wildp == 0)
418 if (wildcard < matchwild) {
420 matchwild = wildcard;