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 $
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/malloc.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
46 #include <sys/thread2.h>
49 #include <net/route.h>
56 static struct ipx_addr zeroipx_addr;
57 static uint16_t ipxpcb_lport_cache;
60 ipx_pcballoc(struct socket *so, struct ipxpcbhead *head)
64 ipxp = kmalloc(sizeof *ipxp, M_PCB, M_WAITOK | M_ZERO | M_NULLOK);
67 ipxp->ipxp_socket = so;
69 ipxp->ipxp_flags |= IPXP_CHECKSUM;
70 LIST_INSERT_HEAD(head, ipxp, ipxp_list);
71 so->so_pcb = (caddr_t)ipxp;
76 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
78 struct sockaddr_ipx *sipx;
81 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
85 sipx = (struct sockaddr_ipx *)nam;
86 if (!ipx_nullhost(sipx->sipx_addr)) {
87 int tport = sipx->sipx_port;
89 sipx->sipx_port = 0; /* yech... */
90 if (ifa_ifwithaddr((struct sockaddr *)sipx) == 0)
91 return (EADDRNOTAVAIL);
92 sipx->sipx_port = tport;
94 lport = sipx->sipx_port;
96 u_short aport = ntohs(lport);
99 if (aport < IPXPORT_RESERVED &&
100 td != NULL && (error = priv_check(td, PRIV_ROOT)) != 0)
102 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
105 ipxp->ipxp_laddr = sipx->sipx_addr;
109 ipxpcb_lport_cache++;
110 if ((ipxpcb_lport_cache < IPXPORT_RESERVED) ||
111 (ipxpcb_lport_cache >= IPXPORT_WELLKNOWN))
112 ipxpcb_lport_cache = IPXPORT_RESERVED;
113 lport = htons(ipxpcb_lport_cache);
114 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
115 ipxp->ipxp_lport = lport;
120 * Connect from a socket to a specified address.
121 * Both address and port must be specified in argument sipx.
122 * If don't have a local address for this socket yet,
126 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
128 struct ipx_ifaddr *ia;
129 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
130 struct ipx_addr *dst;
136 if (sipx->sipx_family != AF_IPX)
137 return (EAFNOSUPPORT);
138 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
139 return (EADDRNOTAVAIL);
141 * If we haven't bound which network number to use as ours,
142 * we will use the number of the outgoing interface.
143 * This depends on having done a routing lookup, which
144 * we will probably have to do anyway, so we might
145 * as well do it now. On the other hand if we are
146 * sending to multiple destinations we may have already
147 * done the lookup, so see if we can use the route
148 * from before. In any case, we only
149 * chose a port number once, even if sending to multiple
152 ro = &ipxp->ipxp_route;
153 dst = &satoipx_addr(ro->ro_dst);
154 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
156 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
158 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
159 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
160 /* can patch route to avoid rtalloc */
161 *dst = sipx->sipx_addr;
164 if (ro->ro_rt != NULL)
168 }/* else cached route is ok; do nothing */
169 ipxp->ipxp_lastdst = sipx->sipx_addr;
170 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
171 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
172 /* No route yet, so try to acquire one */
173 ro->ro_dst.sa_family = AF_IPX;
174 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
175 *dst = sipx->sipx_addr;
179 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
181 * If route is known or can be allocated now,
182 * our src addr is taken from the i/f, else punt.
186 * If we found a route, use the address
187 * corresponding to the outgoing interface
189 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
190 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
191 if (ia->ia_ifp == ifp)
194 u_short fport = sipx->sipx_addr.x_port;
195 sipx->sipx_addr.x_port = 0;
196 ia = (struct ipx_ifaddr *)
197 ifa_ifwithdstaddr((struct sockaddr *)sipx);
198 sipx->sipx_addr.x_port = fport;
200 ia = ipx_iaonnetof(&sipx->sipx_addr);
204 return (EADDRNOTAVAIL);
206 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
208 if (ipx_nullhost(ipxp->ipxp_laddr)) {
210 * If route is known or can be allocated now,
211 * our src addr is taken from the i/f, else punt.
215 * If we found a route, use the address
216 * corresponding to the outgoing interface
218 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
219 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
220 if (ia->ia_ifp == ifp)
223 u_short fport = sipx->sipx_addr.x_port;
224 sipx->sipx_addr.x_port = 0;
225 ia = (struct ipx_ifaddr *)
226 ifa_ifwithdstaddr((struct sockaddr *)sipx);
227 sipx->sipx_addr.x_port = fport;
229 ia = ipx_iaonnetof(&sipx->sipx_addr);
233 return (EADDRNOTAVAIL);
235 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
237 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
239 if (ipxp->ipxp_lport == 0)
240 ipx_pcbbind(ipxp, NULL, td);
242 /* XXX just leave it zero if we can't find a route */
244 ipxp->ipxp_faddr = sipx->sipx_addr;
245 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
250 ipx_pcbdisconnect(struct ipxpcb *ipxp)
253 ipxp->ipxp_faddr = zeroipx_addr;
254 if (ipxp->ipxp_socket->so_state & SS_NOFDREF)
259 ipx_pcbdetach(struct ipxpcb *ipxp)
261 struct socket *so = ipxp->ipxp_socket;
266 if (ipxp->ipxp_route.ro_rt != NULL)
267 rtfree(ipxp->ipxp_route.ro_rt);
268 LIST_REMOVE(ipxp, ipxp_list);
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 ipx_pcblookup(struct ipx_addr *faddr, int lport, int wildp)
301 struct ipxpcb *ipxp, *match = 0;
302 int matchwild = 3, wildcard;
305 fport = faddr->x_port;
306 LIST_FOREACH(ipxp, &ipxpcb_list, ipxp_list) {
307 if (ipxp->ipxp_lport != lport)
310 if (ipx_nullhost(ipxp->ipxp_faddr)) {
311 if (!ipx_nullhost(*faddr))
314 if (ipx_nullhost(*faddr))
317 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
319 if (ipxp->ipxp_fport != fport) {
320 if (ipxp->ipxp_fport != 0)
327 if (wildcard && wildp == 0)
329 if (wildcard < matchwild) {
331 matchwild = wildcard;