2 * Copyright (c) 1990,1994 Regents of The University of Michigan.
3 * All Rights Reserved. See COPYRIGHT.
9 #include <sys/malloc.h>
11 #include <sys/socket.h>
12 #include <sys/socketvar.h>
13 #include <sys/protosw.h>
15 #include <net/route.h>
17 #include <netatalk/at.h>
18 #include <netatalk/at_var.h>
19 #include <netatalk/ddp_var.h>
20 #include <netatalk/at_extern.h>
22 static void at_pcbdisconnect( struct ddpcb *ddp );
23 static void at_sockaddr(struct ddpcb *ddp, struct sockaddr **addr);
24 static int at_pcbsetaddr(struct ddpcb *ddp, struct sockaddr *addr,
26 static int at_pcbconnect(struct ddpcb *ddp, struct sockaddr *addr,
28 static void at_pcbdetach(struct socket *so, struct ddpcb *ddp);
29 static int at_pcballoc(struct socket *so);
31 struct ddpcb *ddp_ports[ ATPORT_LAST ];
32 struct ddpcb *ddpcb = NULL;
33 static u_long ddp_sendspace = DDP_MAXSZ; /* Max ddp size + 1 (ddp_type) */
34 static u_long ddp_recvspace = 10 * ( 587 + sizeof( struct sockaddr_at ));
38 ddp_attach(struct socket *so, int proto, struct thread *td)
45 ddp = sotoddpcb( so );
51 error = at_pcballoc( so );
56 return (soreserve( so, ddp_sendspace, ddp_recvspace ));
60 ddp_detach(struct socket *so)
65 ddp = sotoddpcb( so );
70 at_pcbdetach( so, ddp );
76 ddp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
82 ddp = sotoddpcb( so );
87 error = at_pcbsetaddr(ddp, nam, p);
93 ddp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
99 ddp = sotoddpcb( so );
104 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
109 error = at_pcbconnect( ddp, nam, p );
117 ddp_disconnect(struct socket *so)
123 ddp = sotoddpcb( so );
127 if ( ddp->ddp_fsat.sat_addr.s_node == ATADDR_ANYNODE ) {
132 at_pcbdisconnect( ddp );
133 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
135 soisdisconnected( so );
140 ddp_shutdown(struct socket *so)
144 ddp = sotoddpcb( so );
148 socantsendmore( so );
153 ddp_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
154 struct mbuf *control, struct thread *td)
160 ddp = sotoddpcb( so );
165 if ( control && control->m_len ) {
170 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
175 error = at_pcbconnect(ddp, addr, p);
181 if ( ddp->ddp_fsat.sat_port == ATADDR_ANYPORT ) {
187 error = ddp_output( m, so );
189 at_pcbdisconnect( ddp );
196 ddp_abort(struct socket *so)
201 ddp = sotoddpcb( so );
205 soisdisconnected( so );
207 at_pcbdetach( so, ddp );
214 at_sockaddr(struct ddpcb *ddp, struct sockaddr **addr)
216 *addr = dup_sockaddr((struct sockaddr *)&ddp->ddp_lsat, 0);
220 at_pcbsetaddr(struct ddpcb *ddp, struct sockaddr *addr, struct thread *td)
222 struct sockaddr_at lsat, *sat;
223 struct at_ifaddr *aa;
226 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT ) { /* shouldn't be bound */
230 if (addr != 0) { /* validate passed address */
231 sat = (struct sockaddr_at *)addr;
232 if (sat->sat_family != AF_APPLETALK) {
233 return(EAFNOSUPPORT);
236 if ( sat->sat_addr.s_node != ATADDR_ANYNODE ||
237 sat->sat_addr.s_net != ATADDR_ANYNET ) {
238 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
239 if (( sat->sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) &&
240 ( sat->sat_addr.s_node == AA_SAT( aa )->sat_addr.s_node )) {
245 return( EADDRNOTAVAIL );
249 if ( sat->sat_port != ATADDR_ANYPORT ) {
250 if ( sat->sat_port < ATPORT_FIRST ||
251 sat->sat_port >= ATPORT_LAST ) {
254 if ( sat->sat_port < ATPORT_RESERVED &&
260 bzero( (caddr_t)&lsat, sizeof( struct sockaddr_at ));
261 lsat.sat_len = sizeof(struct sockaddr_at);
262 lsat.sat_addr.s_node = ATADDR_ANYNODE;
263 lsat.sat_addr.s_net = ATADDR_ANYNET;
264 lsat.sat_family = AF_APPLETALK;
268 if ( sat->sat_addr.s_node == ATADDR_ANYNODE &&
269 sat->sat_addr.s_net == ATADDR_ANYNET ) {
270 if ( at_ifaddr == NULL ) {
271 return( EADDRNOTAVAIL );
273 sat->sat_addr = AA_SAT( at_ifaddr )->sat_addr;
275 ddp->ddp_lsat = *sat;
280 if ( sat->sat_port == ATADDR_ANYPORT ) {
281 for ( sat->sat_port = ATPORT_RESERVED;
282 sat->sat_port < ATPORT_LAST; sat->sat_port++ ) {
283 if ( ddp_ports[ sat->sat_port - 1 ] == 0 ) {
287 if ( sat->sat_port == ATPORT_LAST ) {
288 return( EADDRNOTAVAIL );
290 ddp->ddp_lsat.sat_port = sat->sat_port;
291 ddp_ports[ sat->sat_port - 1 ] = ddp;
293 for ( ddpp = ddp_ports[ sat->sat_port - 1 ]; ddpp;
294 ddpp = ddpp->ddp_pnext ) {
295 if ( ddpp->ddp_lsat.sat_addr.s_net == sat->sat_addr.s_net &&
296 ddpp->ddp_lsat.sat_addr.s_node == sat->sat_addr.s_node ) {
300 if ( ddpp != NULL ) {
301 return( EADDRINUSE );
303 ddp->ddp_pnext = ddp_ports[ sat->sat_port - 1 ];
304 ddp_ports[ sat->sat_port - 1 ] = ddp;
305 if ( ddp->ddp_pnext ) {
306 ddp->ddp_pnext->ddp_pprev = ddp;
314 at_pcbconnect(struct ddpcb *ddp, struct sockaddr *addr, struct thread *td)
316 struct sockaddr_at *sat = (struct sockaddr_at *)addr;
318 struct at_ifaddr *aa = 0;
320 u_short hintnet = 0, net;
322 if (sat->sat_family != AF_APPLETALK) {
323 return(EAFNOSUPPORT);
327 * Under phase 2, network 0 means "the network". We take "the
328 * network" to mean the network the control block is bound to.
329 * If the control block is not bound, there is an error.
331 if ( sat->sat_addr.s_net == ATADDR_ANYNET
332 && sat->sat_addr.s_node != ATADDR_ANYNODE ) {
333 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
334 return( EADDRNOTAVAIL );
336 hintnet = ddp->ddp_lsat.sat_addr.s_net;
339 ro = &ddp->ddp_route;
341 * If we've got an old route for this pcb, check that it is valid.
342 * If we've changed our address, we may have an old "good looking"
343 * route here. Attempt to detect it.
349 net = sat->sat_addr.s_net;
352 if ((ifp = ro->ro_rt->rt_ifp) != NULL) {
353 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
354 if ( aa->aa_ifp == ifp &&
355 ntohs( net ) >= ntohs( aa->aa_firstnet ) &&
356 ntohs( net ) <= ntohs( aa->aa_lastnet )) {
361 if ( aa == NULL || ( satosat( &ro->ro_dst )->sat_addr.s_net !=
362 ( hintnet ? hintnet : sat->sat_addr.s_net ) ||
363 satosat( &ro->ro_dst )->sat_addr.s_node !=
364 sat->sat_addr.s_node )) {
366 ro->ro_rt = (struct rtentry *)0;
371 * If we've got no route for this interface, try to find one.
373 if ( ro->ro_rt == (struct rtentry *)0 ||
374 ro->ro_rt->rt_ifp == (struct ifnet *)0 ) {
375 ro->ro_dst.sa_len = sizeof( struct sockaddr_at );
376 ro->ro_dst.sa_family = AF_APPLETALK;
378 satosat( &ro->ro_dst )->sat_addr.s_net = hintnet;
380 satosat( &ro->ro_dst )->sat_addr.s_net = sat->sat_addr.s_net;
382 satosat( &ro->ro_dst )->sat_addr.s_node = sat->sat_addr.s_node;
387 * Make sure any route that we have has a valid interface.
390 if ( ro->ro_rt && ( ifp = ro->ro_rt->rt_ifp )) {
391 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
392 if ( aa->aa_ifp == ifp ) {
398 return( ENETUNREACH );
401 ddp->ddp_fsat = *sat;
402 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
403 return(at_pcbsetaddr(ddp, (struct sockaddr *)0, p));
409 at_pcbdisconnect( struct ddpcb *ddp )
411 ddp->ddp_fsat.sat_addr.s_net = ATADDR_ANYNET;
412 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
413 ddp->ddp_fsat.sat_port = ATADDR_ANYPORT;
417 at_pcballoc( struct socket *so )
421 MALLOC(ddp, struct ddpcb *, sizeof *ddp, M_PCB, M_WAITOK);
422 bzero(ddp, sizeof *ddp);
423 ddp->ddp_lsat.sat_port = ATADDR_ANYPORT;
425 ddp->ddp_next = ddpcb;
426 ddp->ddp_prev = NULL;
427 ddp->ddp_pprev = NULL;
428 ddp->ddp_pnext = NULL;
430 ddpcb->ddp_prev = ddp;
434 ddp->ddp_socket = so;
435 so->so_pcb = (caddr_t)ddp;
440 at_pcbdetach( struct socket *so, struct ddpcb *ddp)
442 soisdisconnected( so );
446 /* remove ddp from ddp_ports list */
447 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT &&
448 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] != NULL ) {
449 if ( ddp->ddp_pprev != NULL ) {
450 ddp->ddp_pprev->ddp_pnext = ddp->ddp_pnext;
452 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] = ddp->ddp_pnext;
454 if ( ddp->ddp_pnext != NULL ) {
455 ddp->ddp_pnext->ddp_pprev = ddp->ddp_pprev;
459 if ( ddp->ddp_route.ro_rt ) {
460 rtfree( ddp->ddp_route.ro_rt );
463 if ( ddp->ddp_prev ) {
464 ddp->ddp_prev->ddp_next = ddp->ddp_next;
466 ddpcb = ddp->ddp_next;
468 if ( ddp->ddp_next ) {
469 ddp->ddp_next->ddp_prev = ddp->ddp_prev;
475 * For the moment, this just find the pcb with the correct local address.
476 * In the future, this will actually do some real searching, so we can use
477 * the sender's address to do de-multiplexing on a single port to many
481 ddp_search( struct sockaddr_at *from, struct sockaddr_at *to,
482 struct at_ifaddr *aa)
487 * Check for bad ports.
489 if ( to->sat_port < ATPORT_FIRST || to->sat_port >= ATPORT_LAST ) {
494 * Make sure the local address matches the sent address. What about
497 for ( ddp = ddp_ports[ to->sat_port - 1 ]; ddp; ddp = ddp->ddp_pnext ) {
498 /* XXX should we handle 0.YY? */
500 /* XXXX.YY to socket on destination interface */
501 if ( to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net &&
502 to->sat_addr.s_node == ddp->ddp_lsat.sat_addr.s_node ) {
506 /* 0.255 to socket on receiving interface */
507 if ( to->sat_addr.s_node == ATADDR_BCAST && ( to->sat_addr.s_net == 0 ||
508 to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net ) &&
509 ddp->ddp_lsat.sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) {
513 /* XXXX.0 to socket on destination interface */
514 if ( to->sat_addr.s_net == aa->aa_firstnet &&
515 to->sat_addr.s_node == 0 &&
516 ntohs( ddp->ddp_lsat.sat_addr.s_net ) >=
517 ntohs( aa->aa_firstnet ) &&
518 ntohs( ddp->ddp_lsat.sat_addr.s_net ) <=
519 ntohs( aa->aa_lastnet )) {
526 at_setpeeraddr(struct socket *so, struct sockaddr **nam)
532 at_setsockaddr(struct socket *so, struct sockaddr **nam)
536 ddp = sotoddpcb( so );
540 at_sockaddr( ddp, nam );
548 atintrq1.ifq_maxlen = IFQ_MAXLEN;
549 atintrq2.ifq_maxlen = IFQ_MAXLEN;
558 for ( ddp = ddpcb; ddp; ddp = ddp->ddp_next ) {
559 at_pcbdetach( ddp->ddp_socket, ddp );
564 struct pr_usrreqs ddp_usrreqs = {
570 pru_connect2_notsupp,