2 * Copyright (c) 1990,1994 Regents of The University of Michigan.
3 * All Rights Reserved. See COPYRIGHT.
5 * $DragonFly: src/sys/netproto/atalk/ddp_usrreq.c,v 1.14 2008/09/24 14:26:39 sephe Exp $
12 #include <sys/malloc.h>
14 #include <sys/mplock2.h>
15 #include <sys/socket.h>
16 #include <sys/socketvar.h>
17 #include <sys/socketvar2.h>
18 #include <sys/protosw.h>
19 #include <sys/thread2.h>
21 #include <net/netisr.h>
22 #include <net/route.h>
27 #include "at_extern.h"
29 static void at_pcbdisconnect( struct ddpcb *ddp );
30 static void at_sockaddr(struct ddpcb *ddp, struct sockaddr **addr);
31 static int at_pcbsetaddr(struct ddpcb *ddp, struct sockaddr *addr,
33 static int at_pcbconnect(struct ddpcb *ddp, struct sockaddr *addr,
35 static void at_pcbdetach(struct socket *so, struct ddpcb *ddp);
36 static int at_pcballoc(struct socket *so);
38 struct ddpcb *ddp_ports[ ATPORT_LAST ];
39 struct ddpcb *ddpcb = NULL;
40 static u_long ddp_sendspace = DDP_MAXSZ; /* Max ddp size + 1 (ddp_type) */
41 static u_long ddp_recvspace = 10 * ( 587 + sizeof( struct sockaddr_at ));
44 ddp_attach(struct socket *so, int proto, struct pru_attach_info *ai)
50 ddp = sotoddpcb( so );
55 error = at_pcballoc( so );
59 return (soreserve( so, ddp_sendspace, ddp_recvspace, ai->sb_rlimit ));
63 ddp_detach(struct socket *so)
67 ddp = sotoddpcb( so );
71 at_pcbdetach( so, ddp );
76 ddp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
81 ddp = sotoddpcb( so );
85 error = at_pcbsetaddr(ddp, nam, td);
90 ddp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
95 ddp = sotoddpcb( so );
100 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
104 error = at_pcbconnect( ddp, nam, td );
111 ddp_disconnect(struct socket *so)
116 ddp = sotoddpcb( so );
120 if ( ddp->ddp_fsat.sat_addr.s_node == ATADDR_ANYNODE ) {
125 at_pcbdisconnect( ddp );
126 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
127 soisdisconnected( so );
128 sofree(so); /* soref above */
133 ddp_shutdown(struct socket *so)
137 ddp = sotoddpcb( so );
141 socantsendmore( so );
146 ddp_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
147 struct mbuf *control, struct thread *td)
152 ddp = sotoddpcb( so );
157 if ( control && control->m_len ) {
162 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
166 error = at_pcbconnect(ddp, addr, td);
171 if ( ddp->ddp_fsat.sat_port == ATADDR_ANYPORT ) {
176 error = ddp_output( m, so );
178 at_pcbdisconnect( ddp );
184 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
185 * will sofree() it when we return.
188 ddp_abort(struct socket *so)
195 soisdisconnected( so );
196 at_pcbdetach( so, ddp );
206 at_sockaddr(struct ddpcb *ddp, struct sockaddr **addr)
208 *addr = dup_sockaddr((struct sockaddr *)&ddp->ddp_lsat);
212 at_pcbsetaddr(struct ddpcb *ddp, struct sockaddr *addr, struct thread *td)
214 struct sockaddr_at lsat, *sat;
215 struct at_ifaddr *aa;
218 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT ) { /* shouldn't be bound */
222 if (addr != 0) { /* validate passed address */
223 sat = (struct sockaddr_at *)addr;
224 if (sat->sat_family != AF_APPLETALK) {
225 return(EAFNOSUPPORT);
228 if ( sat->sat_addr.s_node != ATADDR_ANYNODE ||
229 sat->sat_addr.s_net != ATADDR_ANYNET ) {
230 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
231 if (( sat->sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) &&
232 ( sat->sat_addr.s_node == AA_SAT( aa )->sat_addr.s_node )) {
237 return( EADDRNOTAVAIL );
241 if ( sat->sat_port != ATADDR_ANYPORT ) {
242 if ( sat->sat_port < ATPORT_FIRST ||
243 sat->sat_port >= ATPORT_LAST ) {
246 if ( sat->sat_port < ATPORT_RESERVED &&
247 priv_check(td, PRIV_ROOT) ) {
252 bzero( (caddr_t)&lsat, sizeof( struct sockaddr_at ));
253 lsat.sat_len = sizeof(struct sockaddr_at);
254 lsat.sat_addr.s_node = ATADDR_ANYNODE;
255 lsat.sat_addr.s_net = ATADDR_ANYNET;
256 lsat.sat_family = AF_APPLETALK;
260 if ( sat->sat_addr.s_node == ATADDR_ANYNODE &&
261 sat->sat_addr.s_net == ATADDR_ANYNET ) {
262 if ( at_ifaddr == NULL ) {
263 return( EADDRNOTAVAIL );
265 sat->sat_addr = AA_SAT( at_ifaddr )->sat_addr;
267 ddp->ddp_lsat = *sat;
272 if ( sat->sat_port == ATADDR_ANYPORT ) {
273 for ( sat->sat_port = ATPORT_RESERVED;
274 sat->sat_port < ATPORT_LAST; sat->sat_port++ ) {
275 if ( ddp_ports[ sat->sat_port - 1 ] == 0 ) {
279 if ( sat->sat_port == ATPORT_LAST ) {
280 return( EADDRNOTAVAIL );
282 ddp->ddp_lsat.sat_port = sat->sat_port;
283 ddp_ports[ sat->sat_port - 1 ] = ddp;
285 for ( ddpp = ddp_ports[ sat->sat_port - 1 ]; ddpp;
286 ddpp = ddpp->ddp_pnext ) {
287 if ( ddpp->ddp_lsat.sat_addr.s_net == sat->sat_addr.s_net &&
288 ddpp->ddp_lsat.sat_addr.s_node == sat->sat_addr.s_node ) {
292 if ( ddpp != NULL ) {
293 return( EADDRINUSE );
295 ddp->ddp_pnext = ddp_ports[ sat->sat_port - 1 ];
296 ddp_ports[ sat->sat_port - 1 ] = ddp;
297 if ( ddp->ddp_pnext ) {
298 ddp->ddp_pnext->ddp_pprev = ddp;
306 at_pcbconnect(struct ddpcb *ddp, struct sockaddr *addr, struct thread *td)
308 struct sockaddr_at *sat = (struct sockaddr_at *)addr;
310 struct at_ifaddr *aa = 0;
312 u_short hintnet = 0, net;
314 if (sat->sat_family != AF_APPLETALK) {
315 return(EAFNOSUPPORT);
319 * Under phase 2, network 0 means "the network". We take "the
320 * network" to mean the network the control block is bound to.
321 * If the control block is not bound, there is an error.
323 if ( sat->sat_addr.s_net == ATADDR_ANYNET
324 && sat->sat_addr.s_node != ATADDR_ANYNODE ) {
325 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
326 return( EADDRNOTAVAIL );
328 hintnet = ddp->ddp_lsat.sat_addr.s_net;
331 ro = &ddp->ddp_route;
333 * If we've got an old route for this pcb, check that it is valid.
334 * If we've changed our address, we may have an old "good looking"
335 * route here. Attempt to detect it.
341 net = sat->sat_addr.s_net;
344 if ((ifp = ro->ro_rt->rt_ifp) != NULL) {
345 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
346 if ( aa->aa_ifp == ifp &&
347 ntohs( net ) >= ntohs( aa->aa_firstnet ) &&
348 ntohs( net ) <= ntohs( aa->aa_lastnet )) {
353 if ( aa == NULL || ( satosat( &ro->ro_dst )->sat_addr.s_net !=
354 ( hintnet ? hintnet : sat->sat_addr.s_net ) ||
355 satosat( &ro->ro_dst )->sat_addr.s_node !=
356 sat->sat_addr.s_node )) {
363 * If we've got no route for this interface, try to find one.
365 if ( ro->ro_rt == NULL ||
366 ro->ro_rt->rt_ifp == NULL ) {
367 ro->ro_dst.sa_len = sizeof( struct sockaddr_at );
368 ro->ro_dst.sa_family = AF_APPLETALK;
370 satosat( &ro->ro_dst )->sat_addr.s_net = hintnet;
372 satosat( &ro->ro_dst )->sat_addr.s_net = sat->sat_addr.s_net;
374 satosat( &ro->ro_dst )->sat_addr.s_node = sat->sat_addr.s_node;
379 * Make sure any route that we have has a valid interface.
382 if ( ro->ro_rt && ( ifp = ro->ro_rt->rt_ifp )) {
383 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
384 if ( aa->aa_ifp == ifp ) {
390 return( ENETUNREACH );
393 ddp->ddp_fsat = *sat;
394 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
395 return(at_pcbsetaddr(ddp, NULL, td));
401 at_pcbdisconnect( struct ddpcb *ddp )
403 ddp->ddp_fsat.sat_addr.s_net = ATADDR_ANYNET;
404 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
405 ddp->ddp_fsat.sat_port = ATADDR_ANYPORT;
409 at_pcballoc( struct socket *so )
413 MALLOC(ddp, struct ddpcb *, sizeof *ddp, M_PCB, M_WAITOK | M_ZERO);
414 ddp->ddp_lsat.sat_port = ATADDR_ANYPORT;
416 ddp->ddp_next = ddpcb;
417 ddp->ddp_prev = NULL;
418 ddp->ddp_pprev = NULL;
419 ddp->ddp_pnext = NULL;
421 ddpcb->ddp_prev = ddp;
425 ddp->ddp_socket = so;
426 so->so_pcb = (caddr_t)ddp;
431 at_pcbdetach( struct socket *so, struct ddpcb *ddp)
433 soisdisconnected(so);
437 /* remove ddp from ddp_ports list */
438 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT &&
439 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] != NULL ) {
440 if ( ddp->ddp_pprev != NULL ) {
441 ddp->ddp_pprev->ddp_pnext = ddp->ddp_pnext;
443 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] = ddp->ddp_pnext;
445 if ( ddp->ddp_pnext != NULL ) {
446 ddp->ddp_pnext->ddp_pprev = ddp->ddp_pprev;
450 if ( ddp->ddp_route.ro_rt ) {
451 rtfree( ddp->ddp_route.ro_rt );
454 if ( ddp->ddp_prev ) {
455 ddp->ddp_prev->ddp_next = ddp->ddp_next;
457 ddpcb = ddp->ddp_next;
459 if ( ddp->ddp_next ) {
460 ddp->ddp_next->ddp_prev = ddp->ddp_prev;
466 * For the moment, this just find the pcb with the correct local address.
467 * In the future, this will actually do some real searching, so we can use
468 * the sender's address to do de-multiplexing on a single port to many
472 ddp_search( struct sockaddr_at *from, struct sockaddr_at *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 )) {
517 at_setpeeraddr(struct socket *so, struct sockaddr **nam)
523 at_setsockaddr(struct socket *so, struct sockaddr **nam)
527 ddp = sotoddpcb( so );
531 at_sockaddr( ddp, nam );
539 netisr_register(NETISR_ATALK1, at1intr, NULL);
540 netisr_register(NETISR_ATALK2, at2intr, NULL);
541 netisr_register(NETISR_AARP, aarpintr, NULL);
550 for ( ddp = ddpcb; ddp; ddp = ddp->ddp_next ) {
551 at_pcbdetach( ddp->ddp_socket, ddp );
556 struct pr_usrreqs ddp_usrreqs = {
557 .pru_abort = ddp_abort,
558 .pru_accept = pru_accept_notsupp,
559 .pru_attach = ddp_attach,
560 .pru_bind = ddp_bind,
561 .pru_connect = ddp_connect,
562 .pru_connect2 = pru_connect2_notsupp,
563 .pru_control = at_control,
564 .pru_detach = ddp_detach,
565 .pru_disconnect = ddp_disconnect,
566 .pru_listen = pru_listen_notsupp,
567 .pru_peeraddr = at_setpeeraddr,
568 .pru_rcvd = pru_rcvd_notsupp,
569 .pru_rcvoob = pru_rcvoob_notsupp,
570 .pru_send = ddp_send,
571 .pru_sense = pru_sense_null,
572 .pru_shutdown = ddp_shutdown,
573 .pru_sockaddr = at_setsockaddr,
574 .pru_sosend = sosend,
575 .pru_soreceive = soreceive