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/socket.h>
15 #include <sys/socketvar.h>
16 #include <sys/protosw.h>
17 #include <sys/thread2.h>
19 #include <net/netisr.h>
20 #include <net/route.h>
25 #include "at_extern.h"
27 static void at_pcbdisconnect( struct ddpcb *ddp );
28 static void at_sockaddr(struct ddpcb *ddp, struct sockaddr **addr);
29 static int at_pcbsetaddr(struct ddpcb *ddp, struct sockaddr *addr,
31 static int at_pcbconnect(struct ddpcb *ddp, struct sockaddr *addr,
33 static void at_pcbdetach(struct socket *so, struct ddpcb *ddp);
34 static int at_pcballoc(struct socket *so);
36 struct ddpcb *ddp_ports[ ATPORT_LAST ];
37 struct ddpcb *ddpcb = NULL;
38 static u_long ddp_sendspace = DDP_MAXSZ; /* Max ddp size + 1 (ddp_type) */
39 static u_long ddp_recvspace = 10 * ( 587 + sizeof( struct sockaddr_at ));
42 ddp_attach(struct socket *so, int proto, struct pru_attach_info *ai)
48 ddp = sotoddpcb( so );
54 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 );
72 at_pcbdetach( so, ddp );
78 ddp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
83 ddp = sotoddpcb( so );
88 error = at_pcbsetaddr(ddp, nam, td);
94 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, td );
117 ddp_disconnect(struct socket *so)
122 ddp = sotoddpcb( so );
126 if ( ddp->ddp_fsat.sat_addr.s_node == ATADDR_ANYNODE ) {
131 at_pcbdisconnect( ddp );
132 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
134 soisdisconnected( so );
139 ddp_shutdown(struct socket *so)
143 ddp = sotoddpcb( so );
147 socantsendmore( so );
152 ddp_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
153 struct mbuf *control, struct thread *td)
158 ddp = sotoddpcb( so );
163 if ( control && control->m_len ) {
168 if ( ddp->ddp_fsat.sat_port != ATADDR_ANYPORT ) {
173 error = at_pcbconnect(ddp, addr, td);
179 if ( ddp->ddp_fsat.sat_port == ATADDR_ANYPORT ) {
185 error = ddp_output( m, so );
187 at_pcbdisconnect( ddp );
194 ddp_abort(struct socket *so)
198 ddp = sotoddpcb( so );
202 soisdisconnected( so );
204 at_pcbdetach( so, ddp );
211 at_sockaddr(struct ddpcb *ddp, struct sockaddr **addr)
213 *addr = dup_sockaddr((struct sockaddr *)&ddp->ddp_lsat);
217 at_pcbsetaddr(struct ddpcb *ddp, struct sockaddr *addr, struct thread *td)
219 struct sockaddr_at lsat, *sat;
220 struct at_ifaddr *aa;
223 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT ) { /* shouldn't be bound */
227 if (addr != 0) { /* validate passed address */
228 sat = (struct sockaddr_at *)addr;
229 if (sat->sat_family != AF_APPLETALK) {
230 return(EAFNOSUPPORT);
233 if ( sat->sat_addr.s_node != ATADDR_ANYNODE ||
234 sat->sat_addr.s_net != ATADDR_ANYNET ) {
235 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
236 if (( sat->sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) &&
237 ( sat->sat_addr.s_node == AA_SAT( aa )->sat_addr.s_node )) {
242 return( EADDRNOTAVAIL );
246 if ( sat->sat_port != ATADDR_ANYPORT ) {
247 if ( sat->sat_port < ATPORT_FIRST ||
248 sat->sat_port >= ATPORT_LAST ) {
251 if ( sat->sat_port < ATPORT_RESERVED &&
252 priv_check(td, PRIV_ROOT) ) {
257 bzero( (caddr_t)&lsat, sizeof( struct sockaddr_at ));
258 lsat.sat_len = sizeof(struct sockaddr_at);
259 lsat.sat_addr.s_node = ATADDR_ANYNODE;
260 lsat.sat_addr.s_net = ATADDR_ANYNET;
261 lsat.sat_family = AF_APPLETALK;
265 if ( sat->sat_addr.s_node == ATADDR_ANYNODE &&
266 sat->sat_addr.s_net == ATADDR_ANYNET ) {
267 if ( at_ifaddr == NULL ) {
268 return( EADDRNOTAVAIL );
270 sat->sat_addr = AA_SAT( at_ifaddr )->sat_addr;
272 ddp->ddp_lsat = *sat;
277 if ( sat->sat_port == ATADDR_ANYPORT ) {
278 for ( sat->sat_port = ATPORT_RESERVED;
279 sat->sat_port < ATPORT_LAST; sat->sat_port++ ) {
280 if ( ddp_ports[ sat->sat_port - 1 ] == 0 ) {
284 if ( sat->sat_port == ATPORT_LAST ) {
285 return( EADDRNOTAVAIL );
287 ddp->ddp_lsat.sat_port = sat->sat_port;
288 ddp_ports[ sat->sat_port - 1 ] = ddp;
290 for ( ddpp = ddp_ports[ sat->sat_port - 1 ]; ddpp;
291 ddpp = ddpp->ddp_pnext ) {
292 if ( ddpp->ddp_lsat.sat_addr.s_net == sat->sat_addr.s_net &&
293 ddpp->ddp_lsat.sat_addr.s_node == sat->sat_addr.s_node ) {
297 if ( ddpp != NULL ) {
298 return( EADDRINUSE );
300 ddp->ddp_pnext = ddp_ports[ sat->sat_port - 1 ];
301 ddp_ports[ sat->sat_port - 1 ] = ddp;
302 if ( ddp->ddp_pnext ) {
303 ddp->ddp_pnext->ddp_pprev = ddp;
311 at_pcbconnect(struct ddpcb *ddp, struct sockaddr *addr, struct thread *td)
313 struct sockaddr_at *sat = (struct sockaddr_at *)addr;
315 struct at_ifaddr *aa = 0;
317 u_short hintnet = 0, net;
319 if (sat->sat_family != AF_APPLETALK) {
320 return(EAFNOSUPPORT);
324 * Under phase 2, network 0 means "the network". We take "the
325 * network" to mean the network the control block is bound to.
326 * If the control block is not bound, there is an error.
328 if ( sat->sat_addr.s_net == ATADDR_ANYNET
329 && sat->sat_addr.s_node != ATADDR_ANYNODE ) {
330 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
331 return( EADDRNOTAVAIL );
333 hintnet = ddp->ddp_lsat.sat_addr.s_net;
336 ro = &ddp->ddp_route;
338 * If we've got an old route for this pcb, check that it is valid.
339 * If we've changed our address, we may have an old "good looking"
340 * route here. Attempt to detect it.
346 net = sat->sat_addr.s_net;
349 if ((ifp = ro->ro_rt->rt_ifp) != NULL) {
350 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
351 if ( aa->aa_ifp == ifp &&
352 ntohs( net ) >= ntohs( aa->aa_firstnet ) &&
353 ntohs( net ) <= ntohs( aa->aa_lastnet )) {
358 if ( aa == NULL || ( satosat( &ro->ro_dst )->sat_addr.s_net !=
359 ( hintnet ? hintnet : sat->sat_addr.s_net ) ||
360 satosat( &ro->ro_dst )->sat_addr.s_node !=
361 sat->sat_addr.s_node )) {
363 ro->ro_rt = (struct rtentry *)0;
368 * If we've got no route for this interface, try to find one.
370 if ( ro->ro_rt == (struct rtentry *)0 ||
371 ro->ro_rt->rt_ifp == (struct ifnet *)0 ) {
372 ro->ro_dst.sa_len = sizeof( struct sockaddr_at );
373 ro->ro_dst.sa_family = AF_APPLETALK;
375 satosat( &ro->ro_dst )->sat_addr.s_net = hintnet;
377 satosat( &ro->ro_dst )->sat_addr.s_net = sat->sat_addr.s_net;
379 satosat( &ro->ro_dst )->sat_addr.s_node = sat->sat_addr.s_node;
384 * Make sure any route that we have has a valid interface.
387 if ( ro->ro_rt && ( ifp = ro->ro_rt->rt_ifp )) {
388 for ( aa = at_ifaddr; aa; aa = aa->aa_next ) {
389 if ( aa->aa_ifp == ifp ) {
395 return( ENETUNREACH );
398 ddp->ddp_fsat = *sat;
399 if ( ddp->ddp_lsat.sat_port == ATADDR_ANYPORT ) {
400 return(at_pcbsetaddr(ddp, (struct sockaddr *)0, td));
406 at_pcbdisconnect( struct ddpcb *ddp )
408 ddp->ddp_fsat.sat_addr.s_net = ATADDR_ANYNET;
409 ddp->ddp_fsat.sat_addr.s_node = ATADDR_ANYNODE;
410 ddp->ddp_fsat.sat_port = ATADDR_ANYPORT;
414 at_pcballoc( struct socket *so )
418 MALLOC(ddp, struct ddpcb *, sizeof *ddp, M_PCB, M_WAITOK | M_ZERO);
419 ddp->ddp_lsat.sat_port = ATADDR_ANYPORT;
421 ddp->ddp_next = ddpcb;
422 ddp->ddp_prev = NULL;
423 ddp->ddp_pprev = NULL;
424 ddp->ddp_pnext = NULL;
426 ddpcb->ddp_prev = ddp;
430 ddp->ddp_socket = so;
431 so->so_pcb = (caddr_t)ddp;
436 at_pcbdetach( struct socket *so, struct ddpcb *ddp)
438 soisdisconnected( so );
442 /* remove ddp from ddp_ports list */
443 if ( ddp->ddp_lsat.sat_port != ATADDR_ANYPORT &&
444 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] != NULL ) {
445 if ( ddp->ddp_pprev != NULL ) {
446 ddp->ddp_pprev->ddp_pnext = ddp->ddp_pnext;
448 ddp_ports[ ddp->ddp_lsat.sat_port - 1 ] = ddp->ddp_pnext;
450 if ( ddp->ddp_pnext != NULL ) {
451 ddp->ddp_pnext->ddp_pprev = ddp->ddp_pprev;
455 if ( ddp->ddp_route.ro_rt ) {
456 rtfree( ddp->ddp_route.ro_rt );
459 if ( ddp->ddp_prev ) {
460 ddp->ddp_prev->ddp_next = ddp->ddp_next;
462 ddpcb = ddp->ddp_next;
464 if ( ddp->ddp_next ) {
465 ddp->ddp_next->ddp_prev = ddp->ddp_prev;
471 * For the moment, this just find the pcb with the correct local address.
472 * In the future, this will actually do some real searching, so we can use
473 * the sender's address to do de-multiplexing on a single port to many
477 ddp_search( struct sockaddr_at *from, struct sockaddr_at *to,
478 struct at_ifaddr *aa)
483 * Check for bad ports.
485 if ( to->sat_port < ATPORT_FIRST || to->sat_port >= ATPORT_LAST ) {
490 * Make sure the local address matches the sent address. What about
493 for ( ddp = ddp_ports[ to->sat_port - 1 ]; ddp; ddp = ddp->ddp_pnext ) {
494 /* XXX should we handle 0.YY? */
496 /* XXXX.YY to socket on destination interface */
497 if ( to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net &&
498 to->sat_addr.s_node == ddp->ddp_lsat.sat_addr.s_node ) {
502 /* 0.255 to socket on receiving interface */
503 if ( to->sat_addr.s_node == ATADDR_BCAST && ( to->sat_addr.s_net == 0 ||
504 to->sat_addr.s_net == ddp->ddp_lsat.sat_addr.s_net ) &&
505 ddp->ddp_lsat.sat_addr.s_net == AA_SAT( aa )->sat_addr.s_net ) {
509 /* XXXX.0 to socket on destination interface */
510 if ( to->sat_addr.s_net == aa->aa_firstnet &&
511 to->sat_addr.s_node == 0 &&
512 ntohs( ddp->ddp_lsat.sat_addr.s_net ) >=
513 ntohs( aa->aa_firstnet ) &&
514 ntohs( ddp->ddp_lsat.sat_addr.s_net ) <=
515 ntohs( aa->aa_lastnet )) {
522 at_setpeeraddr(struct socket *so, struct sockaddr **nam)
528 at_setsockaddr(struct socket *so, struct sockaddr **nam)
532 ddp = sotoddpcb( so );
536 at_sockaddr( ddp, nam );
544 netisr_register(NETISR_ATALK1, cpu0_portfn, pktinfo_portfn_cpu0,
545 at1intr, NETISR_FLAG_NOTMPSAFE);
546 netisr_register(NETISR_ATALK2, cpu0_portfn, pktinfo_portfn_cpu0,
547 at2intr, NETISR_FLAG_NOTMPSAFE);
548 netisr_register(NETISR_AARP, cpu0_portfn, pktinfo_portfn_cpu0,
549 aarpintr, NETISR_FLAG_NOTMPSAFE);
558 for ( ddp = ddpcb; ddp; ddp = ddp->ddp_next ) {
559 at_pcbdetach( ddp->ddp_socket, ddp );
564 struct pr_usrreqs ddp_usrreqs = {
565 .pru_abort = ddp_abort,
566 .pru_accept = pru_accept_notsupp,
567 .pru_attach = ddp_attach,
568 .pru_bind = ddp_bind,
569 .pru_connect = ddp_connect,
570 .pru_connect2 = pru_connect2_notsupp,
571 .pru_control = at_control,
572 .pru_detach = ddp_detach,
573 .pru_disconnect = ddp_disconnect,
574 .pru_listen = pru_listen_notsupp,
575 .pru_peeraddr = at_setpeeraddr,
576 .pru_rcvd = pru_rcvd_notsupp,
577 .pru_rcvoob = pru_rcvoob_notsupp,
578 .pru_send = ddp_send,
579 .pru_sense = pru_sense_null,
580 .pru_shutdown = ddp_shutdown,
581 .pru_sockaddr = at_setsockaddr,
582 .pru_sosend = sosend,
583 .pru_soreceive = soreceive,