1/*-
2 * Copyright (c) 1984, 1985, 1986, 1987, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 1995, Mike Mitchell
5 * Copyright (c) 2004-2006 Robert N. M. Watson
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)ipx_usrreq.c
37 */
38
39#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1984, 1985, 1986, 1987, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 1995, Mike Mitchell
5 * Copyright (c) 2004-2006 Robert N. M. Watson
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)ipx_usrreq.c
37 */
38
39#include <sys/cdefs.h>
|
41
42#include "opt_ipx.h"
43
44#include <sys/param.h>
45#include <sys/kernel.h>
46#include <sys/lock.h>
47#include <sys/mbuf.h>
48#include <sys/protosw.h>
49#include <sys/signalvar.h>
50#include <sys/socket.h>
51#include <sys/socketvar.h>
52#include <sys/sx.h>
53#include <sys/sysctl.h>
54#include <sys/systm.h>
55
56#include <net/if.h>
57#include <net/route.h>
58
59#include <netinet/in.h>
60
61#include <netipx/ipx.h>
62#include <netipx/ipx_if.h>
63#include <netipx/ipx_ip.h>
64#include <netipx/ipx_pcb.h>
65#include <netipx/ipx_var.h>
66
67/*
68 * IPX protocol implementation.
69 */
70
71static int ipxsendspace = IPXSNDQ;
72SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
73 &ipxsendspace, 0, "");
74static int ipxrecvspace = IPXRCVQ;
75SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
76 &ipxrecvspace, 0, "");
77
78static void ipx_usr_abort(struct socket *so);
79static int ipx_attach(struct socket *so, int proto, struct thread *td);
80static int ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td);
81static int ipx_connect(struct socket *so, struct sockaddr *nam,
82 struct thread *td);
83static void ipx_detach(struct socket *so);
84static int ipx_disconnect(struct socket *so);
85static int ipx_send(struct socket *so, int flags, struct mbuf *m,
86 struct sockaddr *addr, struct mbuf *control,
87 struct thread *td);
88static int ipx_shutdown(struct socket *so);
89static int ripx_attach(struct socket *so, int proto, struct thread *td);
90static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
91
92struct pr_usrreqs ipx_usrreqs = {
93 .pru_abort = ipx_usr_abort,
94 .pru_attach = ipx_attach,
95 .pru_bind = ipx_bind,
96 .pru_connect = ipx_connect,
97 .pru_control = ipx_control,
98 .pru_detach = ipx_detach,
99 .pru_disconnect = ipx_disconnect,
100 .pru_peeraddr = ipx_peeraddr,
101 .pru_send = ipx_send,
102 .pru_shutdown = ipx_shutdown,
103 .pru_sockaddr = ipx_sockaddr,
104};
105
106struct pr_usrreqs ripx_usrreqs = {
107 .pru_abort = ipx_usr_abort,
108 .pru_attach = ripx_attach,
109 .pru_bind = ipx_bind,
110 .pru_connect = ipx_connect,
111 .pru_control = ipx_control,
112 .pru_detach = ipx_detach,
113 .pru_disconnect = ipx_disconnect,
114 .pru_peeraddr = ipx_peeraddr,
115 .pru_send = ipx_send,
116 .pru_shutdown = ipx_shutdown,
117 .pru_sockaddr = ipx_sockaddr,
118};
119
120/*
121 * This may also be called for raw listeners.
122 */
123void
124ipx_input(m, ipxp)
125 struct mbuf *m;
126 register struct ipxpcb *ipxp;
127{
128 register struct ipx *ipx = mtod(m, struct ipx *);
129 struct ifnet *ifp = m->m_pkthdr.rcvif;
130 struct sockaddr_ipx ipx_ipx;
131
132 KASSERT(ipxp != NULL, ("ipx_input: NULL ipxpcb"));
133 IPX_LOCK_ASSERT(ipxp);
134 /*
135 * Construct sockaddr format source address.
136 * Stuff source address and datagram in user buffer.
137 */
138 ipx_ipx.sipx_len = sizeof(ipx_ipx);
139 ipx_ipx.sipx_family = AF_IPX;
140 ipx_ipx.sipx_addr = ipx->ipx_sna;
141 ipx_ipx.sipx_zero[0] = '\0';
142 ipx_ipx.sipx_zero[1] = '\0';
143 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
144 register struct ifaddr *ifa;
145
146 for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa != NULL;
147 ifa = TAILQ_NEXT(ifa, ifa_link)) {
148 if (ifa->ifa_addr->sa_family == AF_IPX) {
149 ipx_ipx.sipx_addr.x_net =
150 IA_SIPX(ifa)->sipx_addr.x_net;
151 break;
152 }
153 }
154 }
155 ipxp->ipxp_rpt = ipx->ipx_pt;
156 if ((ipxp->ipxp_flags & IPXP_RAWIN) == 0) {
157 m->m_len -= sizeof(struct ipx);
158 m->m_pkthdr.len -= sizeof(struct ipx);
159 m->m_data += sizeof(struct ipx);
160 }
161 if (sbappendaddr(&ipxp->ipxp_socket->so_rcv,
162 (struct sockaddr *)&ipx_ipx, m, NULL) == 0)
163 m_freem(m);
164 else
165 sorwakeup(ipxp->ipxp_socket);
166}
167
168/*
169 * Drop connection, reporting
170 * the specified error.
171 */
172void
173ipx_drop(ipxp, errno)
174 register struct ipxpcb *ipxp;
175 int errno;
176{
177 struct socket *so = ipxp->ipxp_socket;
178
179 IPX_LIST_LOCK_ASSERT();
180 IPX_LOCK_ASSERT(ipxp);
181
182 /*
183 * someday, in the IPX world
184 * we will generate error protocol packets
185 * announcing that the socket has gone away.
186 *
187 * XXX Probably never. IPX does not have error packets.
188 */
189 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
190 tp->t_state = TCPS_CLOSED;
191 tcp_output(tp);
192 }*/
193 so->so_error = errno;
194 ipx_pcbdisconnect(ipxp);
195 soisdisconnected(so);
196}
197
198static int
199ipx_output(ipxp, m0)
200 struct ipxpcb *ipxp;
201 struct mbuf *m0;
202{
203 register struct ipx *ipx;
204 register struct socket *so;
205 register int len = 0;
206 register struct route *ro;
207 struct mbuf *m;
208 struct mbuf *mprev = NULL;
209
210 IPX_LOCK_ASSERT(ipxp);
211
212 /*
213 * Calculate data length.
214 */
215 for (m = m0; m != NULL; m = m->m_next) {
216 mprev = m;
217 len += m->m_len;
218 }
219 /*
220 * Make sure packet is actually of even length.
221 */
222
223 if (len & 1) {
224 m = mprev;
225 if ((m->m_flags & M_EXT) == 0 &&
226 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
227 mtod(m, char*)[m->m_len++] = 0;
228 } else {
229 struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
230
231 if (m1 == NULL) {
232 m_freem(m0);
233 return (ENOBUFS);
234 }
235 m1->m_len = 1;
236 * mtod(m1, char *) = 0;
237 m->m_next = m1;
238 }
239 m0->m_pkthdr.len++;
240 }
241
242 /*
243 * Fill in mbuf with extended IPX header
244 * and addresses and length put into network format.
245 */
246 m = m0;
247 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
248 ipx = mtod(m, struct ipx *);
249 } else {
250 M_PREPEND(m, sizeof(struct ipx), M_DONTWAIT);
251 if (m == NULL)
252 return (ENOBUFS);
253 ipx = mtod(m, struct ipx *);
254 ipx->ipx_tc = 0;
255 ipx->ipx_pt = ipxp->ipxp_dpt;
256 ipx->ipx_sna = ipxp->ipxp_laddr;
257 ipx->ipx_dna = ipxp->ipxp_faddr;
258 len += sizeof(struct ipx);
259 }
260
261 ipx->ipx_len = htons((u_short)len);
262
263 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
264 ipx->ipx_sum = ipx_cksum(m, len);
265 } else
266 ipx->ipx_sum = 0xffff;
267
268 /*
269 * Output datagram.
270 */
271 so = ipxp->ipxp_socket;
272 if (so->so_options & SO_DONTROUTE)
273 return (ipx_outputfl(m, (struct route *)NULL,
274 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
275 /*
276 * Use cached route for previous datagram if
277 * possible. If the previous net was the same
278 * and the interface was a broadcast medium, or
279 * if the previous destination was identical,
280 * then we are ok.
281 *
282 * NB: We don't handle broadcasts because that
283 * would require 3 subroutine calls.
284 */
285 ro = &ipxp->ipxp_route;
286#ifdef ancient_history
287 /*
288 * I think that this will all be handled in ipx_pcbconnect!
289 */
290 if (ro->ro_rt != NULL) {
291 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
292 /*
293 * This assumes we have no GH type routes
294 */
295 if (ro->ro_rt->rt_flags & RTF_HOST) {
296 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
297 goto re_route;
298
299 }
300 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
301 register struct ipx_addr *dst =
302 &satoipx_addr(ro->ro_dst);
303 dst->x_host = ipx->ipx_dna.x_host;
304 }
305 /*
306 * Otherwise, we go through the same gateway
307 * and dst is already set up.
308 */
309 } else {
310 re_route:
311 RTFREE(ro->ro_rt);
312 ro->ro_rt = NULL;
313 }
314 }
315 ipxp->ipxp_lastdst = ipx->ipx_dna;
316#endif /* ancient_history */
317 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
318}
319
320int
321ipx_ctloutput(so, sopt)
322 struct socket *so;
323 struct sockopt *sopt;
324{
325 struct ipxpcb *ipxp = sotoipxpcb(so);
326 int mask, error, optval;
327 short soptval;
328 struct ipx ioptval;
329 long seq;
330
331 KASSERT(ipxp != NULL, ("ipx_ctloutput: ipxp == NULL"));
332 error = 0;
333
334 switch (sopt->sopt_dir) {
335 case SOPT_GET:
336 switch (sopt->sopt_name) {
337 case SO_ALL_PACKETS:
338 mask = IPXP_ALL_PACKETS;
339 goto get_flags;
340
341 case SO_HEADERS_ON_INPUT:
342 mask = IPXP_RAWIN;
343 goto get_flags;
344
345 case SO_IPX_CHECKSUM:
346 mask = IPXP_CHECKSUM;
347 goto get_flags;
348
349 case SO_HEADERS_ON_OUTPUT:
350 mask = IPXP_RAWOUT;
351 get_flags:
352 /* Unlocked read. */
353 soptval = ipxp->ipxp_flags & mask;
354 error = sooptcopyout(sopt, &soptval, sizeof soptval);
355 break;
356
357 case SO_DEFAULT_HEADERS:
358 ioptval.ipx_len = 0;
359 ioptval.ipx_sum = 0;
360 ioptval.ipx_tc = 0;
361 IPX_LOCK(ipxp);
362 ioptval.ipx_pt = ipxp->ipxp_dpt;
363 ioptval.ipx_dna = ipxp->ipxp_faddr;
364 ioptval.ipx_sna = ipxp->ipxp_laddr;
365 IPX_UNLOCK(ipxp);
366 error = sooptcopyout(sopt, &soptval, sizeof soptval);
367 break;
368
369 case SO_SEQNO:
370 IPX_LIST_LOCK();
371 seq = ipx_pexseq;
372 ipx_pexseq++;
373 IPX_LIST_UNLOCK();
374 error = sooptcopyout(sopt, &seq, sizeof seq);
375 break;
376
377 default:
378 error = EINVAL;
379 }
380 break;
381
382 case SOPT_SET:
383 switch (sopt->sopt_name) {
384 case SO_ALL_PACKETS:
385 mask = IPXP_ALL_PACKETS;
386 goto set_head;
387
388 case SO_HEADERS_ON_INPUT:
389 mask = IPXP_RAWIN;
390 goto set_head;
391
392 case SO_IPX_CHECKSUM:
393 mask = IPXP_CHECKSUM;
394
395 case SO_HEADERS_ON_OUTPUT:
396 mask = IPXP_RAWOUT;
397 set_head:
398 error = sooptcopyin(sopt, &optval, sizeof optval,
399 sizeof optval);
400 if (error)
401 break;
402 IPX_LOCK(ipxp);
403 if (optval)
404 ipxp->ipxp_flags |= mask;
405 else
406 ipxp->ipxp_flags &= ~mask;
407 IPX_UNLOCK(ipxp);
408 break;
409
410 case SO_DEFAULT_HEADERS:
411 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
412 sizeof ioptval);
413 if (error)
414 break;
415 /* Unlocked write. */
416 ipxp->ipxp_dpt = ioptval.ipx_pt;
417 break;
418#ifdef IPXIP
419 case SO_IPXIP_ROUTE:
420 error = ipxip_route(so, sopt);
421 break;
422#endif /* IPXIP */
423 default:
424 error = EINVAL;
425 }
426 break;
427 }
428 return (error);
429}
430
431static void
432ipx_usr_abort(so)
433 struct socket *so;
434{
435 struct ipxpcb *ipxp = sotoipxpcb(so);
436
437 KASSERT(ipxp != NULL, ("ipx_usr_abort: ipxp == NULL"));
438 IPX_LIST_LOCK();
439 IPX_LOCK(ipxp);
440 ipx_pcbdetach(ipxp);
441 ipx_pcbfree(ipxp);
442 IPX_LIST_UNLOCK();
443 soisdisconnected(so);
444}
445
446static int
447ipx_attach(so, proto, td)
448 struct socket *so;
449 int proto;
450 struct thread *td;
451{
| 41
42#include "opt_ipx.h"
43
44#include <sys/param.h>
45#include <sys/kernel.h>
46#include <sys/lock.h>
47#include <sys/mbuf.h>
48#include <sys/protosw.h>
49#include <sys/signalvar.h>
50#include <sys/socket.h>
51#include <sys/socketvar.h>
52#include <sys/sx.h>
53#include <sys/sysctl.h>
54#include <sys/systm.h>
55
56#include <net/if.h>
57#include <net/route.h>
58
59#include <netinet/in.h>
60
61#include <netipx/ipx.h>
62#include <netipx/ipx_if.h>
63#include <netipx/ipx_ip.h>
64#include <netipx/ipx_pcb.h>
65#include <netipx/ipx_var.h>
66
67/*
68 * IPX protocol implementation.
69 */
70
71static int ipxsendspace = IPXSNDQ;
72SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
73 &ipxsendspace, 0, "");
74static int ipxrecvspace = IPXRCVQ;
75SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
76 &ipxrecvspace, 0, "");
77
78static void ipx_usr_abort(struct socket *so);
79static int ipx_attach(struct socket *so, int proto, struct thread *td);
80static int ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td);
81static int ipx_connect(struct socket *so, struct sockaddr *nam,
82 struct thread *td);
83static void ipx_detach(struct socket *so);
84static int ipx_disconnect(struct socket *so);
85static int ipx_send(struct socket *so, int flags, struct mbuf *m,
86 struct sockaddr *addr, struct mbuf *control,
87 struct thread *td);
88static int ipx_shutdown(struct socket *so);
89static int ripx_attach(struct socket *so, int proto, struct thread *td);
90static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
91
92struct pr_usrreqs ipx_usrreqs = {
93 .pru_abort = ipx_usr_abort,
94 .pru_attach = ipx_attach,
95 .pru_bind = ipx_bind,
96 .pru_connect = ipx_connect,
97 .pru_control = ipx_control,
98 .pru_detach = ipx_detach,
99 .pru_disconnect = ipx_disconnect,
100 .pru_peeraddr = ipx_peeraddr,
101 .pru_send = ipx_send,
102 .pru_shutdown = ipx_shutdown,
103 .pru_sockaddr = ipx_sockaddr,
104};
105
106struct pr_usrreqs ripx_usrreqs = {
107 .pru_abort = ipx_usr_abort,
108 .pru_attach = ripx_attach,
109 .pru_bind = ipx_bind,
110 .pru_connect = ipx_connect,
111 .pru_control = ipx_control,
112 .pru_detach = ipx_detach,
113 .pru_disconnect = ipx_disconnect,
114 .pru_peeraddr = ipx_peeraddr,
115 .pru_send = ipx_send,
116 .pru_shutdown = ipx_shutdown,
117 .pru_sockaddr = ipx_sockaddr,
118};
119
120/*
121 * This may also be called for raw listeners.
122 */
123void
124ipx_input(m, ipxp)
125 struct mbuf *m;
126 register struct ipxpcb *ipxp;
127{
128 register struct ipx *ipx = mtod(m, struct ipx *);
129 struct ifnet *ifp = m->m_pkthdr.rcvif;
130 struct sockaddr_ipx ipx_ipx;
131
132 KASSERT(ipxp != NULL, ("ipx_input: NULL ipxpcb"));
133 IPX_LOCK_ASSERT(ipxp);
134 /*
135 * Construct sockaddr format source address.
136 * Stuff source address and datagram in user buffer.
137 */
138 ipx_ipx.sipx_len = sizeof(ipx_ipx);
139 ipx_ipx.sipx_family = AF_IPX;
140 ipx_ipx.sipx_addr = ipx->ipx_sna;
141 ipx_ipx.sipx_zero[0] = '\0';
142 ipx_ipx.sipx_zero[1] = '\0';
143 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
144 register struct ifaddr *ifa;
145
146 for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa != NULL;
147 ifa = TAILQ_NEXT(ifa, ifa_link)) {
148 if (ifa->ifa_addr->sa_family == AF_IPX) {
149 ipx_ipx.sipx_addr.x_net =
150 IA_SIPX(ifa)->sipx_addr.x_net;
151 break;
152 }
153 }
154 }
155 ipxp->ipxp_rpt = ipx->ipx_pt;
156 if ((ipxp->ipxp_flags & IPXP_RAWIN) == 0) {
157 m->m_len -= sizeof(struct ipx);
158 m->m_pkthdr.len -= sizeof(struct ipx);
159 m->m_data += sizeof(struct ipx);
160 }
161 if (sbappendaddr(&ipxp->ipxp_socket->so_rcv,
162 (struct sockaddr *)&ipx_ipx, m, NULL) == 0)
163 m_freem(m);
164 else
165 sorwakeup(ipxp->ipxp_socket);
166}
167
168/*
169 * Drop connection, reporting
170 * the specified error.
171 */
172void
173ipx_drop(ipxp, errno)
174 register struct ipxpcb *ipxp;
175 int errno;
176{
177 struct socket *so = ipxp->ipxp_socket;
178
179 IPX_LIST_LOCK_ASSERT();
180 IPX_LOCK_ASSERT(ipxp);
181
182 /*
183 * someday, in the IPX world
184 * we will generate error protocol packets
185 * announcing that the socket has gone away.
186 *
187 * XXX Probably never. IPX does not have error packets.
188 */
189 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
190 tp->t_state = TCPS_CLOSED;
191 tcp_output(tp);
192 }*/
193 so->so_error = errno;
194 ipx_pcbdisconnect(ipxp);
195 soisdisconnected(so);
196}
197
198static int
199ipx_output(ipxp, m0)
200 struct ipxpcb *ipxp;
201 struct mbuf *m0;
202{
203 register struct ipx *ipx;
204 register struct socket *so;
205 register int len = 0;
206 register struct route *ro;
207 struct mbuf *m;
208 struct mbuf *mprev = NULL;
209
210 IPX_LOCK_ASSERT(ipxp);
211
212 /*
213 * Calculate data length.
214 */
215 for (m = m0; m != NULL; m = m->m_next) {
216 mprev = m;
217 len += m->m_len;
218 }
219 /*
220 * Make sure packet is actually of even length.
221 */
222
223 if (len & 1) {
224 m = mprev;
225 if ((m->m_flags & M_EXT) == 0 &&
226 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
227 mtod(m, char*)[m->m_len++] = 0;
228 } else {
229 struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
230
231 if (m1 == NULL) {
232 m_freem(m0);
233 return (ENOBUFS);
234 }
235 m1->m_len = 1;
236 * mtod(m1, char *) = 0;
237 m->m_next = m1;
238 }
239 m0->m_pkthdr.len++;
240 }
241
242 /*
243 * Fill in mbuf with extended IPX header
244 * and addresses and length put into network format.
245 */
246 m = m0;
247 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
248 ipx = mtod(m, struct ipx *);
249 } else {
250 M_PREPEND(m, sizeof(struct ipx), M_DONTWAIT);
251 if (m == NULL)
252 return (ENOBUFS);
253 ipx = mtod(m, struct ipx *);
254 ipx->ipx_tc = 0;
255 ipx->ipx_pt = ipxp->ipxp_dpt;
256 ipx->ipx_sna = ipxp->ipxp_laddr;
257 ipx->ipx_dna = ipxp->ipxp_faddr;
258 len += sizeof(struct ipx);
259 }
260
261 ipx->ipx_len = htons((u_short)len);
262
263 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
264 ipx->ipx_sum = ipx_cksum(m, len);
265 } else
266 ipx->ipx_sum = 0xffff;
267
268 /*
269 * Output datagram.
270 */
271 so = ipxp->ipxp_socket;
272 if (so->so_options & SO_DONTROUTE)
273 return (ipx_outputfl(m, (struct route *)NULL,
274 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
275 /*
276 * Use cached route for previous datagram if
277 * possible. If the previous net was the same
278 * and the interface was a broadcast medium, or
279 * if the previous destination was identical,
280 * then we are ok.
281 *
282 * NB: We don't handle broadcasts because that
283 * would require 3 subroutine calls.
284 */
285 ro = &ipxp->ipxp_route;
286#ifdef ancient_history
287 /*
288 * I think that this will all be handled in ipx_pcbconnect!
289 */
290 if (ro->ro_rt != NULL) {
291 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
292 /*
293 * This assumes we have no GH type routes
294 */
295 if (ro->ro_rt->rt_flags & RTF_HOST) {
296 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
297 goto re_route;
298
299 }
300 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
301 register struct ipx_addr *dst =
302 &satoipx_addr(ro->ro_dst);
303 dst->x_host = ipx->ipx_dna.x_host;
304 }
305 /*
306 * Otherwise, we go through the same gateway
307 * and dst is already set up.
308 */
309 } else {
310 re_route:
311 RTFREE(ro->ro_rt);
312 ro->ro_rt = NULL;
313 }
314 }
315 ipxp->ipxp_lastdst = ipx->ipx_dna;
316#endif /* ancient_history */
317 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
318}
319
320int
321ipx_ctloutput(so, sopt)
322 struct socket *so;
323 struct sockopt *sopt;
324{
325 struct ipxpcb *ipxp = sotoipxpcb(so);
326 int mask, error, optval;
327 short soptval;
328 struct ipx ioptval;
329 long seq;
330
331 KASSERT(ipxp != NULL, ("ipx_ctloutput: ipxp == NULL"));
332 error = 0;
333
334 switch (sopt->sopt_dir) {
335 case SOPT_GET:
336 switch (sopt->sopt_name) {
337 case SO_ALL_PACKETS:
338 mask = IPXP_ALL_PACKETS;
339 goto get_flags;
340
341 case SO_HEADERS_ON_INPUT:
342 mask = IPXP_RAWIN;
343 goto get_flags;
344
345 case SO_IPX_CHECKSUM:
346 mask = IPXP_CHECKSUM;
347 goto get_flags;
348
349 case SO_HEADERS_ON_OUTPUT:
350 mask = IPXP_RAWOUT;
351 get_flags:
352 /* Unlocked read. */
353 soptval = ipxp->ipxp_flags & mask;
354 error = sooptcopyout(sopt, &soptval, sizeof soptval);
355 break;
356
357 case SO_DEFAULT_HEADERS:
358 ioptval.ipx_len = 0;
359 ioptval.ipx_sum = 0;
360 ioptval.ipx_tc = 0;
361 IPX_LOCK(ipxp);
362 ioptval.ipx_pt = ipxp->ipxp_dpt;
363 ioptval.ipx_dna = ipxp->ipxp_faddr;
364 ioptval.ipx_sna = ipxp->ipxp_laddr;
365 IPX_UNLOCK(ipxp);
366 error = sooptcopyout(sopt, &soptval, sizeof soptval);
367 break;
368
369 case SO_SEQNO:
370 IPX_LIST_LOCK();
371 seq = ipx_pexseq;
372 ipx_pexseq++;
373 IPX_LIST_UNLOCK();
374 error = sooptcopyout(sopt, &seq, sizeof seq);
375 break;
376
377 default:
378 error = EINVAL;
379 }
380 break;
381
382 case SOPT_SET:
383 switch (sopt->sopt_name) {
384 case SO_ALL_PACKETS:
385 mask = IPXP_ALL_PACKETS;
386 goto set_head;
387
388 case SO_HEADERS_ON_INPUT:
389 mask = IPXP_RAWIN;
390 goto set_head;
391
392 case SO_IPX_CHECKSUM:
393 mask = IPXP_CHECKSUM;
394
395 case SO_HEADERS_ON_OUTPUT:
396 mask = IPXP_RAWOUT;
397 set_head:
398 error = sooptcopyin(sopt, &optval, sizeof optval,
399 sizeof optval);
400 if (error)
401 break;
402 IPX_LOCK(ipxp);
403 if (optval)
404 ipxp->ipxp_flags |= mask;
405 else
406 ipxp->ipxp_flags &= ~mask;
407 IPX_UNLOCK(ipxp);
408 break;
409
410 case SO_DEFAULT_HEADERS:
411 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
412 sizeof ioptval);
413 if (error)
414 break;
415 /* Unlocked write. */
416 ipxp->ipxp_dpt = ioptval.ipx_pt;
417 break;
418#ifdef IPXIP
419 case SO_IPXIP_ROUTE:
420 error = ipxip_route(so, sopt);
421 break;
422#endif /* IPXIP */
423 default:
424 error = EINVAL;
425 }
426 break;
427 }
428 return (error);
429}
430
431static void
432ipx_usr_abort(so)
433 struct socket *so;
434{
435 struct ipxpcb *ipxp = sotoipxpcb(so);
436
437 KASSERT(ipxp != NULL, ("ipx_usr_abort: ipxp == NULL"));
438 IPX_LIST_LOCK();
439 IPX_LOCK(ipxp);
440 ipx_pcbdetach(ipxp);
441 ipx_pcbfree(ipxp);
442 IPX_LIST_UNLOCK();
443 soisdisconnected(so);
444}
445
446static int
447ipx_attach(so, proto, td)
448 struct socket *so;
449 int proto;
450 struct thread *td;
451{
|
453 int error;
454
455 KASSERT(ipxp == NULL, ("ipx_attach: ipxp != NULL"));
456 error = soreserve(so, ipxsendspace, ipxrecvspace);
457 if (error != 0)
458 return (error);
459 IPX_LIST_LOCK();
460 error = ipx_pcballoc(so, &ipxpcb_list, td);
461 IPX_LIST_UNLOCK();
462 return (error);
463}
464
465static int
466ipx_bind(so, nam, td)
467 struct socket *so;
468 struct sockaddr *nam;
469 struct thread *td;
470{
471 struct ipxpcb *ipxp = sotoipxpcb(so);
472 int error;
473
474 KASSERT(ipxp != NULL, ("ipx_bind: ipxp == NULL"));
475 IPX_LIST_LOCK();
476 IPX_LOCK(ipxp);
477 error = ipx_pcbbind(ipxp, nam, td);
478 IPX_UNLOCK(ipxp);
479 IPX_LIST_UNLOCK();
480 return (error);
481}
482
483static int
484ipx_connect(so, nam, td)
485 struct socket *so;
486 struct sockaddr *nam;
487 struct thread *td;
488{
489 struct ipxpcb *ipxp = sotoipxpcb(so);
490 int error;
491
492 KASSERT(ipxp != NULL, ("ipx_connect: ipxp == NULL"));
493 IPX_LIST_LOCK();
494 IPX_LOCK(ipxp);
495 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
496 error = EISCONN;
497 goto out;
498 }
499 error = ipx_pcbconnect(ipxp, nam, td);
500 if (error == 0)
501 soisconnected(so);
502out:
503 IPX_UNLOCK(ipxp);
504 IPX_LIST_UNLOCK();
505 return (error);
506}
507
508static void
509ipx_detach(so)
510 struct socket *so;
511{
512 struct ipxpcb *ipxp = sotoipxpcb(so);
513
514 KASSERT(ipxp != NULL, ("ipx_detach: ipxp == NULL"));
515 IPX_LIST_LOCK();
516 IPX_LOCK(ipxp);
517 ipx_pcbdetach(ipxp);
518 ipx_pcbfree(ipxp);
519 IPX_LIST_UNLOCK();
520}
521
522static int
523ipx_disconnect(so)
524 struct socket *so;
525{
526 struct ipxpcb *ipxp = sotoipxpcb(so);
527 int error;
528
529 KASSERT(ipxp != NULL, ("ipx_disconnect: ipxp == NULL"));
530 IPX_LIST_LOCK();
531 IPX_LOCK(ipxp);
532 error = 0;
533 if (ipx_nullhost(ipxp->ipxp_faddr)) {
534 error = ENOTCONN;
535 goto out;
536 }
537 ipx_pcbdisconnect(ipxp);
538 soisdisconnected(so);
539out:
540 IPX_UNLOCK(ipxp);
541 IPX_LIST_UNLOCK();
542 return (0);
543}
544
545int
546ipx_peeraddr(so, nam)
547 struct socket *so;
548 struct sockaddr **nam;
549{
550 struct ipxpcb *ipxp = sotoipxpcb(so);
551
552 KASSERT(ipxp != NULL, ("ipx_peeraddr: ipxp == NULL"));
553 ipx_setpeeraddr(ipxp, nam);
554 return (0);
555}
556
557static int
558ipx_send(so, flags, m, nam, control, td)
559 struct socket *so;
560 int flags;
561 struct mbuf *m;
562 struct sockaddr *nam;
563 struct mbuf *control;
564 struct thread *td;
565{
566 int error;
567 struct ipxpcb *ipxp = sotoipxpcb(so);
568 struct ipx_addr laddr;
569
570 KASSERT(ipxp != NULL, ("ipxp_send: ipxp == NULL"));
571 /*
572 * Attempt to only acquire the necessary locks: if the socket is
573 * already connected, we don't need to hold the IPX list lock to be
574 * used by ipx_pcbconnect() and ipx_pcbdisconnect(), just the IPX
575 * pcb lock.
576 */
577 if (nam != NULL) {
578 IPX_LIST_LOCK();
579 IPX_LOCK(ipxp);
580 laddr = ipxp->ipxp_laddr;
581 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
582 IPX_UNLOCK(ipxp);
583 IPX_LIST_UNLOCK();
584 error = EISCONN;
585 goto send_release;
586 }
587 /*
588 * Must block input while temporarily connected.
589 */
590 error = ipx_pcbconnect(ipxp, nam, td);
591 if (error) {
592 IPX_UNLOCK(ipxp);
593 IPX_LIST_UNLOCK();
594 goto send_release;
595 }
596 } else {
597 IPX_LOCK(ipxp);
598 if (ipx_nullhost(ipxp->ipxp_faddr)) {
599 IPX_UNLOCK(ipxp);
600 error = ENOTCONN;
601 goto send_release;
602 }
603 }
604 error = ipx_output(ipxp, m);
605 m = NULL;
606 if (nam != NULL) {
607 ipx_pcbdisconnect(ipxp);
608 ipxp->ipxp_laddr = laddr;
609 IPX_UNLOCK(ipxp);
610 IPX_LIST_UNLOCK();
611 } else
612 IPX_UNLOCK(ipxp);
613
614send_release:
615 if (m != NULL)
616 m_freem(m);
617 return (error);
618}
619
620static int
621ipx_shutdown(so)
622 struct socket *so;
623{
624
625 KASSERT(so->so_pcb != NULL, ("ipx_shutdown: so_pcb == NULL"));
626 socantsendmore(so);
627 return (0);
628}
629
630int
631ipx_sockaddr(so, nam)
632 struct socket *so;
633 struct sockaddr **nam;
634{
635 struct ipxpcb *ipxp = sotoipxpcb(so);
636
637 KASSERT(ipxp != NULL, ("ipx_sockaddr: ipxp == NULL"));
638 ipx_setsockaddr(ipxp, nam);
639 return (0);
640}
641
642static int
643ripx_attach(so, proto, td)
644 struct socket *so;
645 int proto;
646 struct thread *td;
647{
648 int error = 0;
649 struct ipxpcb *ipxp = sotoipxpcb(so);
650
651 KASSERT(ipxp == NULL, ("ripx_attach: ipxp != NULL"));
652 if (td != NULL && (error = suser(td)) != 0)
653 return (error);
654 /*
655 * We hold the IPX list lock for the duration as address parameters
656 * of the IPX pcb are changed. Since no one else holds a reference
657 * to the ipxpcb yet, we don't need the ipxpcb lock here.
658 */
659 IPX_LIST_LOCK();
660 error = ipx_pcballoc(so, &ipxrawpcb_list, td);
661 if (error)
662 goto out;
663 ipxp = sotoipxpcb(so);
664 error = soreserve(so, ipxsendspace, ipxrecvspace);
665 if (error)
666 goto out;
667 ipxp->ipxp_faddr.x_host = ipx_broadhost;
668 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;
669out:
670 IPX_LIST_UNLOCK();
671 return (error);
672}
| 455 int error;
456
457 KASSERT(ipxp == NULL, ("ipx_attach: ipxp != NULL"));
458 error = soreserve(so, ipxsendspace, ipxrecvspace);
459 if (error != 0)
460 return (error);
461 IPX_LIST_LOCK();
462 error = ipx_pcballoc(so, &ipxpcb_list, td);
463 IPX_LIST_UNLOCK();
464 return (error);
465}
466
467static int
468ipx_bind(so, nam, td)
469 struct socket *so;
470 struct sockaddr *nam;
471 struct thread *td;
472{
473 struct ipxpcb *ipxp = sotoipxpcb(so);
474 int error;
475
476 KASSERT(ipxp != NULL, ("ipx_bind: ipxp == NULL"));
477 IPX_LIST_LOCK();
478 IPX_LOCK(ipxp);
479 error = ipx_pcbbind(ipxp, nam, td);
480 IPX_UNLOCK(ipxp);
481 IPX_LIST_UNLOCK();
482 return (error);
483}
484
485static int
486ipx_connect(so, nam, td)
487 struct socket *so;
488 struct sockaddr *nam;
489 struct thread *td;
490{
491 struct ipxpcb *ipxp = sotoipxpcb(so);
492 int error;
493
494 KASSERT(ipxp != NULL, ("ipx_connect: ipxp == NULL"));
495 IPX_LIST_LOCK();
496 IPX_LOCK(ipxp);
497 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
498 error = EISCONN;
499 goto out;
500 }
501 error = ipx_pcbconnect(ipxp, nam, td);
502 if (error == 0)
503 soisconnected(so);
504out:
505 IPX_UNLOCK(ipxp);
506 IPX_LIST_UNLOCK();
507 return (error);
508}
509
510static void
511ipx_detach(so)
512 struct socket *so;
513{
514 struct ipxpcb *ipxp = sotoipxpcb(so);
515
516 KASSERT(ipxp != NULL, ("ipx_detach: ipxp == NULL"));
517 IPX_LIST_LOCK();
518 IPX_LOCK(ipxp);
519 ipx_pcbdetach(ipxp);
520 ipx_pcbfree(ipxp);
521 IPX_LIST_UNLOCK();
522}
523
524static int
525ipx_disconnect(so)
526 struct socket *so;
527{
528 struct ipxpcb *ipxp = sotoipxpcb(so);
529 int error;
530
531 KASSERT(ipxp != NULL, ("ipx_disconnect: ipxp == NULL"));
532 IPX_LIST_LOCK();
533 IPX_LOCK(ipxp);
534 error = 0;
535 if (ipx_nullhost(ipxp->ipxp_faddr)) {
536 error = ENOTCONN;
537 goto out;
538 }
539 ipx_pcbdisconnect(ipxp);
540 soisdisconnected(so);
541out:
542 IPX_UNLOCK(ipxp);
543 IPX_LIST_UNLOCK();
544 return (0);
545}
546
547int
548ipx_peeraddr(so, nam)
549 struct socket *so;
550 struct sockaddr **nam;
551{
552 struct ipxpcb *ipxp = sotoipxpcb(so);
553
554 KASSERT(ipxp != NULL, ("ipx_peeraddr: ipxp == NULL"));
555 ipx_setpeeraddr(ipxp, nam);
556 return (0);
557}
558
559static int
560ipx_send(so, flags, m, nam, control, td)
561 struct socket *so;
562 int flags;
563 struct mbuf *m;
564 struct sockaddr *nam;
565 struct mbuf *control;
566 struct thread *td;
567{
568 int error;
569 struct ipxpcb *ipxp = sotoipxpcb(so);
570 struct ipx_addr laddr;
571
572 KASSERT(ipxp != NULL, ("ipxp_send: ipxp == NULL"));
573 /*
574 * Attempt to only acquire the necessary locks: if the socket is
575 * already connected, we don't need to hold the IPX list lock to be
576 * used by ipx_pcbconnect() and ipx_pcbdisconnect(), just the IPX
577 * pcb lock.
578 */
579 if (nam != NULL) {
580 IPX_LIST_LOCK();
581 IPX_LOCK(ipxp);
582 laddr = ipxp->ipxp_laddr;
583 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
584 IPX_UNLOCK(ipxp);
585 IPX_LIST_UNLOCK();
586 error = EISCONN;
587 goto send_release;
588 }
589 /*
590 * Must block input while temporarily connected.
591 */
592 error = ipx_pcbconnect(ipxp, nam, td);
593 if (error) {
594 IPX_UNLOCK(ipxp);
595 IPX_LIST_UNLOCK();
596 goto send_release;
597 }
598 } else {
599 IPX_LOCK(ipxp);
600 if (ipx_nullhost(ipxp->ipxp_faddr)) {
601 IPX_UNLOCK(ipxp);
602 error = ENOTCONN;
603 goto send_release;
604 }
605 }
606 error = ipx_output(ipxp, m);
607 m = NULL;
608 if (nam != NULL) {
609 ipx_pcbdisconnect(ipxp);
610 ipxp->ipxp_laddr = laddr;
611 IPX_UNLOCK(ipxp);
612 IPX_LIST_UNLOCK();
613 } else
614 IPX_UNLOCK(ipxp);
615
616send_release:
617 if (m != NULL)
618 m_freem(m);
619 return (error);
620}
621
622static int
623ipx_shutdown(so)
624 struct socket *so;
625{
626
627 KASSERT(so->so_pcb != NULL, ("ipx_shutdown: so_pcb == NULL"));
628 socantsendmore(so);
629 return (0);
630}
631
632int
633ipx_sockaddr(so, nam)
634 struct socket *so;
635 struct sockaddr **nam;
636{
637 struct ipxpcb *ipxp = sotoipxpcb(so);
638
639 KASSERT(ipxp != NULL, ("ipx_sockaddr: ipxp == NULL"));
640 ipx_setsockaddr(ipxp, nam);
641 return (0);
642}
643
644static int
645ripx_attach(so, proto, td)
646 struct socket *so;
647 int proto;
648 struct thread *td;
649{
650 int error = 0;
651 struct ipxpcb *ipxp = sotoipxpcb(so);
652
653 KASSERT(ipxp == NULL, ("ripx_attach: ipxp != NULL"));
654 if (td != NULL && (error = suser(td)) != 0)
655 return (error);
656 /*
657 * We hold the IPX list lock for the duration as address parameters
658 * of the IPX pcb are changed. Since no one else holds a reference
659 * to the ipxpcb yet, we don't need the ipxpcb lock here.
660 */
661 IPX_LIST_LOCK();
662 error = ipx_pcballoc(so, &ipxrawpcb_list, td);
663 if (error)
664 goto out;
665 ipxp = sotoipxpcb(so);
666 error = soreserve(so, ipxsendspace, ipxrecvspace);
667 if (error)
668 goto out;
669 ipxp->ipxp_faddr.x_host = ipx_broadhost;
670 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;
671out:
672 IPX_LIST_UNLOCK();
673 return (error);
674}
|