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;
58 static uint16_t ipxpcb_lport_cache;
61 ipx_pcballoc(struct socket *so, struct ipxpcbhead *head)
65 MALLOC(ipxp, struct ipxpcb *, sizeof *ipxp, M_PCB,
66 M_WAITOK | M_ZERO | M_NULLOK);
69 ipxp->ipxp_socket = so;
71 ipxp->ipxp_flags |= IPXP_CHECKSUM;
72 LIST_INSERT_HEAD(head, ipxp, ipxp_list);
73 so->so_pcb = (caddr_t)ipxp;
78 ipx_pcbbind(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
80 struct sockaddr_ipx *sipx;
83 if (ipxp->ipxp_lport || !ipx_nullhost(ipxp->ipxp_laddr))
87 sipx = (struct sockaddr_ipx *)nam;
88 if (!ipx_nullhost(sipx->sipx_addr)) {
89 int tport = sipx->sipx_port;
91 sipx->sipx_port = 0; /* yech... */
92 if (ifa_ifwithaddr((struct sockaddr *)sipx) == 0)
93 return (EADDRNOTAVAIL);
94 sipx->sipx_port = tport;
96 lport = sipx->sipx_port;
98 u_short aport = ntohs(lport);
101 if (aport < IPXPORT_RESERVED &&
102 td != NULL && (error = priv_check(td, PRIV_ROOT)) != 0)
104 if (ipx_pcblookup(&zeroipx_addr, lport, 0))
107 ipxp->ipxp_laddr = sipx->sipx_addr;
111 ipxpcb_lport_cache++;
112 if ((ipxpcb_lport_cache < IPXPORT_RESERVED) ||
113 (ipxpcb_lport_cache >= IPXPORT_WELLKNOWN))
114 ipxpcb_lport_cache = IPXPORT_RESERVED;
115 lport = htons(ipxpcb_lport_cache);
116 } while (ipx_pcblookup(&zeroipx_addr, lport, 0));
117 ipxp->ipxp_lport = lport;
122 * Connect from a socket to a specified address.
123 * Both address and port must be specified in argument sipx.
124 * If don't have a local address for this socket yet,
128 ipx_pcbconnect(struct ipxpcb *ipxp, struct sockaddr *nam, struct thread *td)
130 struct ipx_ifaddr *ia;
131 struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)nam;
132 struct ipx_addr *dst;
138 if (sipx->sipx_family != AF_IPX)
139 return (EAFNOSUPPORT);
140 if (sipx->sipx_port == 0 || ipx_nullhost(sipx->sipx_addr))
141 return (EADDRNOTAVAIL);
143 * If we haven't bound which network number to use as ours,
144 * we will use the number of the outgoing interface.
145 * This depends on having done a routing lookup, which
146 * we will probably have to do anyway, so we might
147 * as well do it now. On the other hand if we are
148 * sending to multiple destinations we may have already
149 * done the lookup, so see if we can use the route
150 * from before. In any case, we only
151 * chose a port number once, even if sending to multiple
154 ro = &ipxp->ipxp_route;
155 dst = &satoipx_addr(ro->ro_dst);
156 if (ipxp->ipxp_socket->so_options & SO_DONTROUTE)
158 if (!ipx_neteq(ipxp->ipxp_lastdst, sipx->sipx_addr))
160 if (!ipx_hosteq(ipxp->ipxp_lastdst, sipx->sipx_addr)) {
161 if (ro->ro_rt != NULL && !(ro->ro_rt->rt_flags & RTF_HOST)) {
162 /* can patch route to avoid rtalloc */
163 *dst = sipx->sipx_addr;
166 if (ro->ro_rt != NULL)
170 }/* else cached route is ok; do nothing */
171 ipxp->ipxp_lastdst = sipx->sipx_addr;
172 if ((ipxp->ipxp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
173 (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
174 /* No route yet, so try to acquire one */
175 ro->ro_dst.sa_family = AF_IPX;
176 ro->ro_dst.sa_len = sizeof(ro->ro_dst);
177 *dst = sipx->sipx_addr;
181 if (ipx_neteqnn(ipxp->ipxp_laddr.x_net, ipx_zeronet)) {
183 * If route is known or can be allocated now,
184 * our src addr is taken from the i/f, else punt.
188 * If we found a route, use the address
189 * corresponding to the outgoing interface
191 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
192 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
193 if (ia->ia_ifp == ifp)
196 u_short fport = sipx->sipx_addr.x_port;
197 sipx->sipx_addr.x_port = 0;
198 ia = (struct ipx_ifaddr *)
199 ifa_ifwithdstaddr((struct sockaddr *)sipx);
200 sipx->sipx_addr.x_port = fport;
202 ia = ipx_iaonnetof(&sipx->sipx_addr);
206 return (EADDRNOTAVAIL);
208 ipxp->ipxp_laddr.x_net = satoipx_addr(ia->ia_addr).x_net;
210 if (ipx_nullhost(ipxp->ipxp_laddr)) {
212 * If route is known or can be allocated now,
213 * our src addr is taken from the i/f, else punt.
217 * If we found a route, use the address
218 * corresponding to the outgoing interface
220 if (ro->ro_rt != NULL && (ifp = ro->ro_rt->rt_ifp) != NULL)
221 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
222 if (ia->ia_ifp == ifp)
225 u_short fport = sipx->sipx_addr.x_port;
226 sipx->sipx_addr.x_port = 0;
227 ia = (struct ipx_ifaddr *)
228 ifa_ifwithdstaddr((struct sockaddr *)sipx);
229 sipx->sipx_addr.x_port = fport;
231 ia = ipx_iaonnetof(&sipx->sipx_addr);
235 return (EADDRNOTAVAIL);
237 ipxp->ipxp_laddr.x_host = satoipx_addr(ia->ia_addr).x_host;
239 if (ipx_pcblookup(&sipx->sipx_addr, ipxp->ipxp_lport, 0))
241 if (ipxp->ipxp_lport == 0)
242 ipx_pcbbind(ipxp, NULL, td);
244 /* XXX just leave it zero if we can't find a route */
246 ipxp->ipxp_faddr = sipx->sipx_addr;
247 /* Includes ipxp->ipxp_fport = sipx->sipx_port; */
252 ipx_pcbdisconnect(struct ipxpcb *ipxp)
255 ipxp->ipxp_faddr = zeroipx_addr;
256 if (ipxp->ipxp_socket->so_state & SS_NOFDREF)
261 ipx_pcbdetach(struct ipxpcb *ipxp)
263 struct socket *so = ipxp->ipxp_socket;
268 if (ipxp->ipxp_route.ro_rt != NULL)
269 rtfree(ipxp->ipxp_route.ro_rt);
270 LIST_REMOVE(ipxp, ipxp_list);
275 ipx_setsockaddr(struct ipxpcb *ipxp, struct sockaddr **nam)
277 struct sockaddr_ipx *sipx, ssipx;
280 bzero((caddr_t)sipx, sizeof(*sipx));
281 sipx->sipx_len = sizeof(*sipx);
282 sipx->sipx_family = AF_IPX;
283 sipx->sipx_addr = ipxp->ipxp_laddr;
284 *nam = dup_sockaddr((struct sockaddr *)sipx);
288 ipx_setpeeraddr(struct ipxpcb *ipxp, 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);
301 ipx_pcblookup(struct ipx_addr *faddr, int lport, int wildp)
303 struct ipxpcb *ipxp, *match = 0;
304 int matchwild = 3, wildcard;
307 fport = faddr->x_port;
308 LIST_FOREACH(ipxp, &ipxpcb_list, ipxp_list) {
309 if (ipxp->ipxp_lport != lport)
312 if (ipx_nullhost(ipxp->ipxp_faddr)) {
313 if (!ipx_nullhost(*faddr))
316 if (ipx_nullhost(*faddr))
319 if (!ipx_hosteq(ipxp->ipxp_faddr, *faddr))
321 if (ipxp->ipxp_fport != fport) {
322 if (ipxp->ipxp_fport != 0)
329 if (wildcard && wildp == 0)
331 if (wildcard < matchwild) {
333 matchwild = wildcard;