2 * Copyright (c) 1990,1994 Regents of The University of Michigan.
3 * All Rights Reserved. See COPYRIGHT.
15 #include <sys/ioctl.h>
16 #include <sys/socket.h>
17 #include <sys/socketvar.h>
18 #include <sys/protosw.h>
20 #include <net/route.h>
30 struct ddpcb *ddpcb = NULL;
31 u_int32_t ddp_sendspace = DDP_MAXSZ; /* Max ddp size + 1 (ddp_type) */
32 u_int32_t ddp_recvspace = 10 * ( 587 + sizeof( struct sockaddr_at ));
35 ddp_usrreq( so, req, m, addr, rights )
38 struct mbuf *m, *addr, *rights;
43 ddp = sotoddpcb( so );
45 if ( req == PRU_CONTROL ) {
46 return( at_control( (int) m, (caddr_t) addr,
47 (struct ifnet *) rights ));
50 if ( rights && rights->m_len ) {
55 if ( ddp == NULL && req != PRU_ATTACH ) {
66 if (( error = at_pcballoc( so )) != 0 ) {
69 error = soreserve( so, ddp_sendspace, ddp_recvspace );
73 at_pcbdetach( so, ddp );
77 error = at_pcbsetaddr( ddp, addr );
81 at_sockaddr( ddp, addr );
85 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
90 error = at_pcbconnect( ddp, addr );
96 if ( ddp->ddp_fsat.sat_addr.s_node == ATADDR_ANYNODE ) {
100 at_pcbdisconnect( ddp );
101 soisdisconnected( so );
105 socantsendmore( so );
112 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
118 error = at_pcbconnect( ddp, addr );
124 if ( ddp->ddp_fsat.sat_port == ATADDR_ANYPORT ) {
130 error = ddp_output( ddp, m );
133 at_pcbdisconnect( ddp );
140 soisdisconnected( so );
141 at_pcbdetach( so, ddp );
158 * Don't mfree. Good architecture...
160 return( EOPNOTSUPP );
164 * 1. Don't return block size.
180 at_sockaddr( ddp, addr )
184 struct sockaddr_at *sat;
186 addr->m_len = sizeof( struct sockaddr_at );
187 sat = mtod( addr, struct sockaddr_at *);
188 *sat = ddp->ddp_lsat;
191 at_pcbsetaddr( ddp, addr )
195 struct sockaddr_at lsat, *sat;
196 struct at_ifaddr *aa;
199 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT ) { /* shouldn't be bound */
203 if ( addr != 0 ) { /* validate passed address */
204 sat = mtod( addr, struct sockaddr_at *);
205 if ( addr->m_len != sizeof( *sat )) {
208 if ( sat->sat_family != AF_APPLETALK ) {
209 return( EAFNOSUPPORT );
212 if ( sat->sat_addr.s_node != ATADDR_ANYNODE ||
213 sat->sat_addr.s_net != ATADDR_ANYNET ) {
214 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
215 if (( sat->sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) &&
216 ( sat->sat_addr.s_node == AA_SAT( aa )->sat_addr.s_node )) {
221 return( EADDRNOTAVAIL );
225 if ( sat->sat_port != ATADDR_ANYPORT ) {
226 if ( sat->sat_port < ATPORT_FIRST ||
227 sat->sat_port >= ATPORT_LAST ) {
231 if ( sat->sat_port < ATPORT_RESERVED &&
232 suser( u.u_cred, &u.u_acflag )) {
236 if ( sat->sat_port < ATPORT_RESERVED && ( !suser())) {
242 bzero( (caddr_t)&lsat, sizeof( struct sockaddr_at ));
243 lsat.sat_family = AF_APPLETALK;
247 if ( sat->sat_addr.s_node == ATADDR_ANYNODE &&
248 sat->sat_addr.s_net == ATADDR_ANYNET ) {
249 if ( at_ifaddr == NULL ) {
250 return( EADDRNOTAVAIL );
252 sat->sat_addr = AA_SAT( at_ifaddr )->sat_addr;
254 ddp->ddp_lsat = *sat;
259 if ( sat->sat_port == ATADDR_ANYPORT ) {
260 for ( sat->sat_port = ATPORT_RESERVED;
261 sat->sat_port < ATPORT_LAST; sat->sat_port++ ) {
262 if ( ddp_ports[ sat->sat_port - 1 ] == 0 ) {
266 if ( sat->sat_port == ATPORT_LAST ) {
267 return( EADDRNOTAVAIL );
269 ddp->ddp_lsat.sat_port = sat->sat_port;
270 ddp_ports[ sat->sat_port - 1 ] = ddp;
272 for ( ddpp = ddp_ports[ sat->sat_port - 1 ]; ddpp;
273 ddpp = ddpp->ddp_pnext ) {
274 if ( ddpp->ddp_lsat.sat_addr.s_net == sat->sat_addr.s_net &&
275 ddpp->ddp_lsat.sat_addr.s_node == sat->sat_addr.s_node ) {
279 if ( ddpp != NULL ) {
280 return( EADDRINUSE );
282 ddp->ddp_pnext = ddp_ports[ sat->sat_port - 1 ];
283 ddp_ports[ sat->sat_port - 1 ] = ddp;
284 if ( ddp->ddp_pnext ) {
285 ddp->ddp_pnext->ddp_pprev = ddp;
292 at_pcbconnect( ddp, addr )
296 struct sockaddr_at *sat = mtod( addr, struct sockaddr_at *);
298 struct at_ifaddr *aa = 0;
300 u_short hintnet = 0, net;
302 if ( addr->m_len != sizeof( *sat ))
304 if ( sat->sat_family != AF_APPLETALK ) {
305 return( EAFNOSUPPORT );
309 * Under phase 2, network 0 means "the network". We take "the
310 * network" to mean the network the control block is bound to.
311 * If the control block is not bound, there is an error.
313 if ( sat->sat_addr.s_net == 0 && sat->sat_addr.s_node != ATADDR_ANYNODE ) {
314 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
315 return( EADDRNOTAVAIL );
317 hintnet = ddp->ddp_lsat.sat_addr.s_net;
320 ro = &ddp->ddp_route;
322 * If we've got an old route for this pcb, check that it is valid.
323 * If we've changed our address, we may have an old "good looking"
324 * route here. Attempt to detect it.
330 net = sat->sat_addr.s_net;
333 if ( ifp = ro->ro_rt->rt_ifp ) {
334 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
335 if ( aa->aa_ifp == ifp &&
336 ntohs( net ) >= ntohs( aa->aa_firstnet ) &&
337 ntohs( net ) <= ntohs( aa->aa_lastnet )) {
342 if ( aa == NULL || ( satosat( &ro->ro_dst )->sat_addr.s_net !=
343 ( hintnet ? hintnet : sat->sat_addr.s_net ) ||
344 satosat( &ro->ro_dst )->sat_addr.s_node !=
345 sat->sat_addr.s_node )) {
351 ro->ro_rt = (struct rtentry *)0;
356 * If we've got no route for this interface, try to find one.
358 if ( ro->ro_rt == (struct rtentry *)0 ||
359 ro->ro_rt->rt_ifp == (struct ifnet *)0 ) {
361 ro->ro_dst.sa_len = sizeof( struct sockaddr_at );
363 ro->ro_dst.sa_family = AF_APPLETALK;
364 if ( hintnet != 0 ) {
365 satosat( &ro->ro_dst )->sat_addr.s_net = hintnet;
367 satosat( &ro->ro_dst )->sat_addr.s_net = sat->sat_addr.s_net;
369 satosat( &ro->ro_dst )->sat_addr.s_node = sat->sat_addr.s_node;
374 * Make sure any route that we have has a valid interface.
377 if ( ro->ro_rt && ( ifp = ro->ro_rt->rt_ifp )) {
378 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
379 if ( aa->aa_ifp == ifp ) {
385 return( ENETUNREACH );
388 ddp->ddp_fsat = *sat;
389 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
390 return( at_pcbsetaddr( ddp, (struct mbuf *)0 ));
395 at_pcbdisconnect( ddp )
398 ddp->ddp_fsat.sat_addr.s_net = ATADDR_ANYNET;
399 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
400 ddp->ddp_fsat.sat_port = ATADDR_ANYPORT;
409 m = m_getclr( M_WAIT, MT_PCB );
410 ddp = mtod( m, struct ddpcb * );
411 ddp->ddp_lsat.sat_port = ATADDR_ANYPORT;
413 ddp->ddp_next = ddpcb;
414 ddp->ddp_prev = NULL;
415 ddp->ddp_pprev = NULL;
416 ddp->ddp_pnext = NULL;
418 ddpcb->ddp_prev = ddp;
422 ddp->ddp_socket = so;
423 so->so_pcb = (caddr_t)ddp;
427 at_pcbdetach( so, ddp )
431 soisdisconnected( so );
435 /* remove ddp from ddp_ports list */
436 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT &&
437 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] != NULL ) {
438 if ( ddp->ddp_pprev != NULL ) {
439 ddp->ddp_pprev->ddp_pnext = ddp->ddp_pnext;
441 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] = ddp->ddp_pnext;
443 if ( ddp->ddp_pnext != NULL ) {
444 ddp->ddp_pnext->ddp_pprev = ddp->ddp_pprev;
448 if ( ddp->ddp_route.ro_rt ) {
449 rtfree( ddp->ddp_route.ro_rt );
452 if ( ddp->ddp_prev ) {
453 ddp->ddp_prev->ddp_next = ddp->ddp_next;
455 ddpcb = ddp->ddp_next;
457 if ( ddp->ddp_next ) {
458 ddp->ddp_next->ddp_prev = ddp->ddp_prev;
461 (void) m_free( dtom( ddp ));
465 * For the moment, this just find the pcb with the correct local address.
466 * In the future, this will actually do some real searching, so we can use
467 * the sender's address to do de-multiplexing on a single port to many
471 ddp_search( from, to, aa )
472 struct sockaddr_at *from, *to;
473 struct at_ifaddr *aa;
478 * Check for bad ports.
480 if ( to->sat_port < ATPORT_FIRST || to->sat_port >= ATPORT_LAST ) {
485 * Make sure the local address matches the sent address. What about
488 for ( ddp = ddp_ports[ to->sat_port - 1 ]; ddp; ddp = ddp->ddp_pnext ) {
489 /* XXX should we handle 0.YY? */
491 /* XXXX.YY to socket on destination interface */
492 if ( to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net &&
493 to->sat_addr.s_node == ddp->ddp_lsat.sat_addr.s_node ) {
497 /* 0.255 to socket on receiving interface */
498 if ( to->sat_addr.s_node == ATADDR_BCAST && ( to->sat_addr.s_net == 0 ||
499 to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net ) &&
500 ddp->ddp_lsat.sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) {
504 /* XXXX.0 to socket on destination interface */
505 if ( to->sat_addr.s_net == aa->aa_firstnet &&
506 to->sat_addr.s_node == 0 &&
507 ntohs( ddp->ddp_lsat.sat_addr.s_net ) >=
508 ntohs( aa->aa_firstnet ) &&
509 ntohs( ddp->ddp_lsat.sat_addr.s_net ) <=
510 ntohs( aa->aa_lastnet )) {
519 atintrq1.ifq_maxlen = IFQ_MAXLEN;
520 atintrq2.ifq_maxlen = IFQ_MAXLEN;
527 for ( ddp = ddpcb; ddp; ddp = ddp->ddp_next ) {
528 at_pcbdetach( ddp->ddp_socket, ddp );