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 1.13 2006/12/05 23:31:57 dillon Exp $
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/malloc.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
47 #include <sys/thread2.h>
50 #include <net/route.h>
57 static struct ipx_addr zeroipx_addr;
60 ipx_pcballoc(struct socket *so, struct ipxpcb *head)
64 MALLOC(ipxp, struct ipxpcb *, sizeof *ipxp, M_PCB,
65 M_WAITOK | M_ZERO | M_NULLOK);
68 ipxp->ipxp_socket = so;
70 ipxp->ipxp_flags |= IPXP_CHECKSUM;
72 so->so_pcb = (caddr_t)ipxp;
77 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
79 struct sockaddr_ipx *sipx;
82 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
86 sipx = (struct sockaddr_ipx *)nam;
87 if (!ipx_nullhost(sipx->sipx_addr)) {
88 int tport = sipx->sipx_port;
90 sipx->sipx_port = 0; /* yech... */
91 if (ifa_ifwithaddr((struct sockaddr *)sipx) == 0)
92 return (EADDRNOTAVAIL);
93 sipx->sipx_port = tport;
95 lport = sipx->sipx_port;
97 u_short aport = ntohs(lport);
100 if (aport < IPXPORT_RESERVED &&
101 td != NULL && (error = priv_check(td, PRIV_ROOT)) != 0)
103 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
106 ipxp->ipxp_laddr = sipx->sipx_addr;
111 if ((ipxpcb.ipxp_lport < IPXPORT_RESERVED) ||
112 (ipxpcb.ipxp_lport >= IPXPORT_WELLKNOWN))
113 ipxpcb.ipxp_lport = IPXPORT_RESERVED;
114 lport = htons(ipxpcb.ipxp_lport);
115 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
116 ipxp->ipxp_lport = lport;
121 * Connect from a socket to a specified address.
122 * Both address and port must be specified in argument sipx.
123 * If don't have a local address for this socket yet,
127 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
129 struct ipx_ifaddr *ia;
130 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
131 struct ipx_addr *dst;
137 if (sipx->sipx_family != AF_IPX)
138 return (EAFNOSUPPORT);
139 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
140 return (EADDRNOTAVAIL);
142 * If we haven't bound which network number to use as ours,
143 * we will use the number of the outgoing interface.
144 * This depends on having done a routing lookup, which
145 * we will probably have to do anyway, so we might
146 * as well do it now. On the other hand if we are
147 * sending to multiple destinations we may have already
148 * done the lookup, so see if we can use the route
149 * from before. In any case, we only
150 * chose a port number once, even if sending to multiple
153 ro = &ipxp->ipxp_route;
154 dst = &satoipx_addr(ro->ro_dst);
155 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
157 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
159 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
160 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
161 /* can patch route to avoid rtalloc */
162 *dst = sipx->sipx_addr;
165 if (ro->ro_rt != NULL)
169 }/* else cached route is ok; do nothing */
170 ipxp->ipxp_lastdst = sipx->sipx_addr;
171 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
172 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
173 /* No route yet, so try to acquire one */
174 ro->ro_dst.sa_family = AF_IPX;
175 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
176 *dst = sipx->sipx_addr;
180 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
182 * If route is known or can be allocated now,
183 * our src addr is taken from the i/f, else punt.
187 * If we found a route, use the address
188 * corresponding to the outgoing interface
190 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
191 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
192 if (ia->ia_ifp == ifp)
195 u_short fport = sipx->sipx_addr.x_port;
196 sipx->sipx_addr.x_port = 0;
197 ia = (struct ipx_ifaddr *)
198 ifa_ifwithdstaddr((struct sockaddr *)sipx);
199 sipx->sipx_addr.x_port = fport;
201 ia = ipx_iaonnetof(&sipx->sipx_addr);
205 return (EADDRNOTAVAIL);
207 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
209 if (ipx_nullhost(ipxp->ipxp_laddr)) {
211 * If route is known or can be allocated now,
212 * our src addr is taken from the i/f, else punt.
216 * If we found a route, use the address
217 * corresponding to the outgoing interface
219 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
220 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
221 if (ia->ia_ifp == ifp)
224 u_short fport = sipx->sipx_addr.x_port;
225 sipx->sipx_addr.x_port = 0;
226 ia = (struct ipx_ifaddr *)
227 ifa_ifwithdstaddr((struct sockaddr *)sipx);
228 sipx->sipx_addr.x_port = fport;
230 ia = ipx_iaonnetof(&sipx->sipx_addr);
234 return (EADDRNOTAVAIL);
236 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
238 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
240 if (ipxp->ipxp_lport == 0)
241 ipx_pcbbind(ipxp, NULL, td);
243 /* XXX just leave it zero if we can't find a route */
245 ipxp->ipxp_faddr = sipx->sipx_addr;
246 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
251 ipx_pcbdisconnect(struct ipxpcb *ipxp)
254 ipxp->ipxp_faddr = zeroipx_addr;
255 if (ipxp->ipxp_socket->so_state & SS_NOFDREF)
260 ipx_pcbdetach(struct ipxpcb *ipxp)
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);
286 ipx_setpeeraddr(struct ipxpcb *ipxp, struct sockaddr **nam)
288 struct sockaddr_ipx *sipx, ssipx;
291 bzero((caddr_t)sipx, sizeof(*sipx));
292 sipx->sipx_len = sizeof(*sipx);
293 sipx->sipx_family = AF_IPX;
294 sipx->sipx_addr = ipxp->ipxp_faddr;
295 *nam = dup_sockaddr((struct sockaddr *)sipx);
299 * Pass some notification to all connections of a protocol
300 * associated with address dst. Call the
301 * protocol specific routine to handle each connection.
302 * Also pass an extra paramter via the ipxpcb. (which may in fact
303 * be a parameter list!)
306 ipx_pcbnotify(struct ipx_addr *dst, int error,
307 void (*notify)(struct ipxpcb *), long param)
309 struct ipxpcb *ipxp, *oinp;
313 for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb);) {
314 if (!ipx_hosteq(*dst,ipxp->ipxp_faddr)) {
316 ipxp = ipxp->ipxp_next;
319 if (ipxp->ipxp_socket == 0)
322 ipxp->ipxp_socket->so_error = error;
324 ipxp = ipxp->ipxp_next;
325 oinp->ipxp_notify_param = param;
333 * After a routing change, flush old routing
334 * and allocate a (hopefully) better one.
337 ipx_rtchange(struct ipxpcb *ipxp)
339 if (ipxp->ipxp_route.ro_rt != NULL) {
340 rtfree(ipxp->ipxp_route.ro_rt);
341 ipxp->ipxp_route.ro_rt = NULL;
343 * A new route can be allocated the next time
344 * output is attempted.
347 /* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
352 ipx_pcblookup(struct ipx_addr *faddr, int lport, int wildp)
354 struct ipxpcb *ipxp, *match = 0;
355 int matchwild = 3, wildcard;
358 fport = faddr->x_port;
359 for (ipxp = (&ipxpcb)->ipxp_next; ipxp != (&ipxpcb); ipxp = ipxp->ipxp_next) {
360 if (ipxp->ipxp_lport != lport)
363 if (ipx_nullhost(ipxp->ipxp_faddr)) {
364 if (!ipx_nullhost(*faddr))
367 if (ipx_nullhost(*faddr))
370 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
372 if (ipxp->ipxp_fport != fport) {
373 if (ipxp->ipxp_fport != 0)
380 if (wildcard && wildp == 0)
382 if (wildcard < matchwild) {
384 matchwild = wildcard;