1 /* $NetBSD: natm.c,v 1.5 1996/11/09 03:26:26 chuck Exp $ */
2 /* $FreeBSD: src/sys/netnatm/natm.c,v 1.12 2000/02/13 03:32:03 peter Exp $ */
3 /* $DragonFly: src/sys/netproto/natm/natm.c,v 1.31 2008/09/24 14:26:39 sephe Exp $ */
7 * Copyright (c) 1996 Charles D. Cranor and Washington University.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by Charles D. Cranor and
21 * Washington University.
22 * 4. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * natm.c: native mode ATM access (both aal0 and aal5).
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
45 #include <sys/sockio.h>
46 #include <sys/protosw.h>
47 #include <sys/malloc.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
52 #include <sys/thread2.h>
53 #include <sys/msgport2.h>
54 #include <sys/mplock2.h>
57 #include <net/if_atm.h>
58 #include <net/netisr.h>
60 #include <netinet/in.h>
64 static u_long natm5_sendspace = 16*1024;
65 static u_long natm5_recvspace = 16*1024;
67 static u_long natm0_sendspace = 16*1024;
68 static u_long natm0_recvspace = 16*1024;
73 #ifdef FREEBSD_USRREQS
75 * FreeBSD new usrreqs supersedes pr_usrreq.
77 static int natm_usr_attach (struct socket *, int, struct pru_attach_info *);
78 static int natm_usr_detach (struct socket *);
79 static int natm_usr_connect (struct socket *, struct sockaddr *,
81 static int natm_usr_disconnect (struct socket *);
82 static int natm_usr_shutdown (struct socket *);
83 static int natm_usr_send (struct socket *, int, struct mbuf *,
84 struct sockaddr *, struct mbuf *,
86 static int natm_usr_peeraddr (struct socket *, struct sockaddr **);
87 static int natm_usr_control (struct socket *, u_long, caddr_t,
88 struct ifnet *, struct thread *);
89 static int natm_usr_abort (struct socket *);
90 static int natm_usr_bind (struct socket *, struct sockaddr *,
92 static int natm_usr_sockaddr (struct socket *, struct sockaddr **);
95 natm_usr_attach(struct socket *so, int proto, struct pru_attach_info *ai)
101 npcb = (struct natmpcb *) so->so_pcb;
108 if (so->so_snd.ssb_hiwat == 0 || so->so_rcv.ssb_hiwat == 0) {
109 if (proto == PROTO_NATMAAL5)
110 error = soreserve(so, natm5_sendspace, natm5_recvspace,
113 error = soreserve(so, natm0_sendspace, natm0_recvspace,
119 so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK));
120 npcb->npcb_socket = so;
127 natm_usr_detach(struct socket *so)
129 struct natmpcb *npcb;
133 npcb = (struct natmpcb *) so->so_pcb;
140 * we turn on 'drain' *before* we sofree.
142 npcb_free(npcb, NPCB_DESTROY); /* drain */
151 natm_usr_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
153 struct natmpcb *npcb;
154 struct sockaddr_natm *snatm;
155 struct atm_pseudoioctl api;
161 proto = so->so_proto->pr_protocol;
162 npcb = (struct natmpcb *) so->so_pcb;
169 * validate nam and npcb
172 snatm = (struct sockaddr_natm *)nam;
173 if (snatm->snatm_len != sizeof(*snatm) ||
174 (npcb->npcb_flags & NPCB_FREE) == 0) {
178 if (snatm->snatm_family != AF_NATM) {
179 error = EAFNOSUPPORT;
183 snatm->snatm_if[IFNAMSIZ-1] = '\0'; /* XXX ensure null termination
184 since ifunit() uses strcmp */
187 * convert interface string to ifp, validate.
190 ifp = ifunit(snatm->snatm_if);
191 if (ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) {
195 if (ifp->if_output != atm_output) {
196 error = EAFNOSUPPORT;
201 * register us with the NATM PCB layer
204 if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) {
213 ATM_PH_FLAGS(&api.aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
214 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
215 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
217 ifnet_serialize_all(ifp);
218 if (ifp->if_ioctl == NULL ||
219 ifp->if_ioctl(ifp, SIOCATMENA, (caddr_t) &api,
220 td->td_proc->p_ucred) != 0) {
221 ifnet_deserialize_all(ifp);
222 npcb_free(npcb, NPCB_REMOVE);
226 ifnet_deserialize_all(ifp);
236 natm_usr_disconnect(struct socket *so)
238 struct natmpcb *npcb;
239 struct atm_pseudoioctl api;
244 npcb = (struct natmpcb *) so->so_pcb;
250 if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) {
251 kprintf("natm: disconnected check\n");
255 ifp = npcb->npcb_ifp;
261 ATM_PH_FLAGS(&api.aph) = ATM_PH_AAL5;
262 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
263 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
265 if (ifp->if_ioctl != NULL) {
266 ifnet_serialize_all(ifp);
267 ifp->if_ioctl(ifp, SIOCATMDIS, (caddr_t) &api, NULL);
268 ifnet_deserialize_all(ifp);
271 npcb_free(npcb, NPCB_REMOVE);
272 soisdisconnected(so);
280 natm_usr_shutdown(struct socket *so)
287 natm_usr_send(struct socket *so, int flags, struct mbuf *m,
288 struct sockaddr *nam, struct mbuf *control, struct thread *td)
290 struct natmpcb *npcb;
291 struct atm_pseudohdr *aph;
293 int proto = so->so_proto->pr_protocol;
297 npcb = (struct natmpcb *) so->so_pcb;
303 if (control && control->m_len) {
311 * send the data. we must put an atm_pseudohdr on first
314 M_PREPEND(m, sizeof(*aph), M_WAITOK);
319 aph = mtod(m, struct atm_pseudohdr *);
320 ATM_PH_VPI(aph) = npcb->npcb_vpi;
321 ATM_PH_SETVCI(aph, npcb->npcb_vci);
322 ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
324 error = atm_output(npcb->npcb_ifp, m, NULL, NULL);
332 natm_usr_peeraddr(struct socket *so, struct sockaddr **nam)
334 struct natmpcb *npcb;
335 struct sockaddr_natm *snatm, ssnatm;
339 npcb = (struct natmpcb *) so->so_pcb;
346 bzero(snatm, sizeof(*snatm));
347 snatm->snatm_len = sizeof(*snatm);
348 snatm->snatm_family = AF_NATM;
349 strlcpy(snatm->snatm_if, npcb->npcb_ifp->if_xname,
350 sizeof(snatm->snatm_if));
351 snatm->snatm_vci = npcb->npcb_vci;
352 snatm->snatm_vpi = npcb->npcb_vpi;
353 *nam = dup_sockaddr((struct sockaddr *)snatm);
361 natm_usr_control(struct socket *so, u_long cmd, caddr_t arg,
362 struct ifnet *ifp, struct thread *td)
364 struct natmpcb *npcb;
365 struct atm_rawioctl ario;
368 npcb = (struct natmpcb *) so->so_pcb;
375 * raw atm ioctl. comes in as a SIOCRAWATM. we convert it to
376 * SIOCXRAWATM and pass it to the driver.
378 if (cmd == SIOCRAWATM) {
379 if (npcb->npcb_ifp == NULL) {
384 ario.rawvalue = *((int *)arg);
385 ifnet_serialize_all(npcb->npcb_ifp);
386 error = npcb->npcb_ifp->if_ioctl(npcb->npcb_ifp,
387 SIOCXRAWATM, (caddr_t) &ario,
388 td->td_proc->p_ucred);
389 ifnet_deserialize_all(npcb->npcb_ifp);
392 npcb->npcb_flags |= NPCB_RAW;
394 npcb->npcb_flags &= ~(NPCB_RAW);
404 natm_usr_abort(struct socket *so)
406 return natm_usr_shutdown(so);
410 natm_usr_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
416 natm_usr_sockaddr(struct socket *so, struct sockaddr **nam)
421 /* xxx - should be const */
422 struct pr_usrreqs natm_usrreqs = {
423 .pru_abort = natm_usr_abort,
424 .pru_accept = pru_accept_notsupp,
425 .pru_attach = natm_usr_attach,
426 .pru_bind = natm_usr_bind,
427 .pru_connect = natm_usr_connect,
428 .pru_connect2 = pru_connect2_notsupp,
429 .pru_control = natm_usr_control,
430 .pru_detach = natm_usr_detach,
431 .pru_disconnect = natm_usr_disconnect,
432 .pru_listen = pru_listen_notsupp,
433 .pru_peeraddr = natm_usr_peeraddr,
434 .pru_rcvd = pru_rcvd_notsupp,
435 .pru_rcvoob = pru_rcvoob_notsupp,
436 .pru_send = natm_usr_send,
437 .pru_sense = pru_sense_null,
438 .pru_shutdown = natm_usr_shutdown,
439 .pru_sockaddr = natm_usr_sockaddr,
440 .pru_sosend = sosend,
441 .pru_soreceive = soreceive
444 #else /* !FREEBSD_USRREQS */
446 #if defined(__NetBSD__) || defined(__OpenBSD__)
448 natm_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
449 struct mbuf *control, struct proc *p)
450 #elif defined(__DragonFly__)
452 natm_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
453 struct mbuf *control)
457 struct natmpcb *npcb;
458 struct sockaddr_natm *snatm;
459 struct atm_pseudoioctl api;
460 struct atm_pseudohdr *aph;
461 struct atm_rawioctl ario;
463 int proto = so->so_proto->pr_protocol;
467 npcb = (struct natmpcb *) so->so_pcb;
469 if (npcb == NULL && req != PRU_ATTACH) {
476 case PRU_ATTACH: /* attach protocol to up */
483 if (so->so_snd.ssb_hiwat == 0 || so->so_rcv.ssb_hiwat == 0) {
484 if (proto == PROTO_NATMAAL5)
485 error = soreserve(so, natm5_sendspace, natm5_recvspace);
487 error = soreserve(so, natm0_sendspace, natm0_recvspace);
492 so->so_pcb = (caddr_t) (npcb = npcb_alloc(M_WAITOK));
493 npcb->npcb_socket = so;
497 case PRU_DETACH: /* detach protocol from up */
500 * we turn on 'drain' *before* we sofree.
503 npcb_free(npcb, NPCB_DESTROY); /* drain */
509 case PRU_CONNECT: /* establish connection to peer */
512 * validate nam and npcb
515 if (nam->m_len != sizeof(*snatm)) {
519 snatm = mtod(nam, struct sockaddr_natm *);
520 if (snatm->snatm_len != sizeof(*snatm) ||
521 (npcb->npcb_flags & NPCB_FREE) == 0) {
525 if (snatm->snatm_family != AF_NATM) {
526 error = EAFNOSUPPORT;
530 snatm->snatm_if[IFNAMSIZ-1] = '\0'; /* XXX ensure null termination
531 since ifunit() uses strcmp */
534 * convert interface string to ifp, validate.
537 ifp = ifunit(snatm->snatm_if);
538 if (ifp == NULL || (ifp->if_flags & IFF_RUNNING) == 0) {
542 if (ifp->if_output != atm_output) {
543 error = EAFNOSUPPORT;
549 * register us with the NATM PCB layer
552 if (npcb_add(npcb, ifp, snatm->snatm_vci, snatm->snatm_vpi) != npcb) {
561 ATM_PH_FLAGS(&api.aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
562 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
563 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
565 ifnet_serialize_all(ifp);
566 if (ifp->if_ioctl == NULL ||
567 ifp->if_ioctl(ifp, SIOCATMENA, (caddr_t) &api, NULL) != 0) {
568 ifnet_deserialize_all(ifp);
569 npcb_free(npcb, NPCB_REMOVE);
573 ifnet_deserialize_all(ifp);
579 case PRU_DISCONNECT: /* disconnect from peer */
581 if ((npcb->npcb_flags & NPCB_CONNECTED) == 0) {
582 kprintf("natm: disconnected check\n");
586 ifp = npcb->npcb_ifp;
592 ATM_PH_FLAGS(&api.aph) = ATM_PH_AAL5;
593 ATM_PH_VPI(&api.aph) = npcb->npcb_vpi;
594 ATM_PH_SETVCI(&api.aph, npcb->npcb_vci);
596 ifnet_serialize_all(ifp);
597 if (ifp->if_ioctl != NULL)
598 ifp->if_ioctl(ifp, SIOCATMDIS, (caddr_t) &api, NULL);
599 ifnet_deserialize_all(ifp);
601 npcb_free(npcb, NPCB_REMOVE);
602 soisdisconnected(so);
606 case PRU_SHUTDOWN: /* won't send any more data */
610 case PRU_SEND: /* send this data */
611 if (control && control->m_len) {
619 * send the data. we must put an atm_pseudohdr on first
622 M_PREPEND(m, sizeof(*aph), M_WAITOK);
627 aph = mtod(m, struct atm_pseudohdr *);
628 ATM_PH_VPI(aph) = npcb->npcb_vpi;
629 ATM_PH_SETVCI(aph, npcb->npcb_vci);
630 ATM_PH_FLAGS(aph) = (proto == PROTO_NATMAAL5) ? ATM_PH_AAL5 : 0;
632 error = atm_output(npcb->npcb_ifp, m, NULL, NULL);
636 case PRU_SENSE: /* return status into m */
640 case PRU_PEERADDR: /* fetch peer's address */
641 snatm = mtod(nam, struct sockaddr_natm *);
642 bzero(snatm, sizeof(*snatm));
643 nam->m_len = snatm->snatm_len = sizeof(*snatm);
644 snatm->snatm_family = AF_NATM;
645 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
646 bcopy(npcb->npcb_ifp->if_xname, snatm->snatm_if, sizeof(snatm->snatm_if));
647 #elif defined(__DragonFly__)
648 ksnprintf(snatm->snatm_if, sizeof(snatm->snatm_if),
649 "%s%d", npcb->npcb_ifp->if_name, npcb->npcb_ifp->if_unit);
651 snatm->snatm_vci = npcb->npcb_vci;
652 snatm->snatm_vpi = npcb->npcb_vpi;
655 case PRU_CONTROL: /* control operations on protocol */
657 * raw atm ioctl. comes in as a SIOCRAWATM. we convert it to
658 * SIOCXRAWATM and pass it to the driver.
660 if ((u_long)m == SIOCRAWATM) {
661 if (npcb->npcb_ifp == NULL) {
666 ario.rawvalue = *((int *)nam);
667 ifnet_serialize_all(npcb->npcb_ifp);
668 error = npcb->npcb_ifp->if_ioctl(npcb->npcb_ifp, SIOCXRAWATM,
669 (caddr_t) &ario, NULL);
670 ifnet_deserialize_all(npcb->npcb_ifp);
673 npcb->npcb_flags |= NPCB_RAW;
675 npcb->npcb_flags &= ~(NPCB_RAW);
684 case PRU_BIND: /* bind socket to address */
685 case PRU_LISTEN: /* listen for connection */
686 case PRU_ACCEPT: /* accept connection from peer */
687 case PRU_CONNECT2: /* connect two sockets */
688 case PRU_ABORT: /* abort (fast DISCONNECT, DETATCH) */
689 /* (only happens if LISTEN socket) */
690 case PRU_RCVD: /* have taken data; more room now */
691 case PRU_FASTTIMO: /* 200ms timeout */
692 case PRU_SLOWTIMO: /* 500ms timeout */
693 case PRU_RCVOOB: /* retrieve out of band data */
694 case PRU_SENDOOB: /* send out of band data */
695 case PRU_PROTORCV: /* receive from below */
696 case PRU_PROTOSEND: /* send to below */
697 case PRU_SOCKADDR: /* fetch socket's address */
699 kprintf("natm: PRU #%d unsupported\n", req);
704 default: panic("natm usrreq");
712 #endif /* !FREEBSD_USRREQS */
715 * natm0_sysctl: not used, but here in case we want to add something
720 natm0_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
721 void *newp, size_t newlen)
723 /* All sysctl names at this level are terminal. */
726 return (ENOPROTOOPT);
730 * natm5_sysctl: not used, but here in case we want to add something
735 natm5_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
736 void *newp, size_t newlen)
738 /* All sysctl names at this level are terminal. */
741 return (ENOPROTOOPT);
744 static void natmintr(struct netmsg *);
746 #if defined(__DragonFly__)
748 netisr_natm_setup(void *dummy __unused)
750 netisr_register(NETISR_NATM, natmintr, NULL);
752 SYSINIT(natm_setup, SI_BOOT2_KLD, SI_ORDER_ANY, netisr_natm_setup, NULL);
758 LIST_INIT(&natm_pcbs);
760 netisr_register(NETISR_NATM, natmintr, NULL);
764 * natmintr: software interrupt
766 * note: we expect a socket pointer in rcvif rather than an interface
767 * pointer. we can get the interface pointer from the so's PCB if
771 natmintr(struct netmsg *msg)
773 struct mbuf *m = ((struct netmsg_packet *)msg)->nm_packet;
775 struct natmpcb *npcb;
778 if ((m->m_flags & M_PKTHDR) == 0)
779 panic("natmintr no HDR");
784 npcb = (struct natmpcb *) m->m_pkthdr.rcvif; /* XXX: overloaded */
785 so = npcb->npcb_socket;
791 if (npcb->npcb_flags & NPCB_DRAIN) {
793 if (npcb->npcb_inq == 0)
794 FREE(npcb, M_PCB); /* done! */
798 if (npcb->npcb_flags & NPCB_FREE) {
799 m_freem(m); /* drop */
803 #ifdef NEED_TO_RESTORE_IFP
804 m->m_pkthdr.rcvif = npcb->npcb_ifp;
807 m->m_pkthdr.rcvif = NULL; /* null it out to be safe */
811 if (ssb_space(&so->so_rcv) > m->m_pkthdr.len ||
812 ((npcb->npcb_flags & NPCB_RAW) != 0 && so->so_rcv.ssb_cc < NPCB_RAWCC) ) {
815 natm_sookbytes += m->m_pkthdr.len;
817 sbappendrecord(&so->so_rcv.sb, m);
822 natm_sodropbytes += m->m_pkthdr.len;
828 /* msg was embedded in the mbuf, do not reply! */