3 * ===================================
4 * HARP | Host ATM Research Platform
5 * ===================================
8 * This Host ATM Research Platform ("HARP") file (the "Software") is
9 * made available by Network Computing Services, Inc. ("NetworkCS")
10 * "AS IS". NetworkCS does not provide maintenance, improvements or
11 * support of any kind.
13 * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
14 * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
15 * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
16 * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
17 * In no event shall NetworkCS be responsible for any damages, including
18 * but not limited to consequential damages, arising from or relating to
19 * any use of the Software or related support.
21 * Copyright 1994-1998 Network Computing Services, Inc.
23 * Copies of this Software may be made, however, the above copyright
24 * notice must be reproduced on all copies.
26 * @(#) $Id: atm_aal5.c,v 1.1 1998/09/15 08:22:57 phk Exp $
34 * ATM AAL5 socket protocol processing
39 static char *RCSid = "@(#) $Id: atm_aal5.c,v 1.1 1998/09/15 08:22:57 phk Exp $";
42 #include <netatm/kern_include.h>
49 u_long atm_aal5_sendspace = 64 * 1024; /* XXX */
50 u_long atm_aal5_recvspace = 64 * 1024; /* XXX */
56 static int atm_aal5_attach __P((struct socket *, int, struct proc *));
57 static int atm_aal5_detach __P((struct socket *));
58 static int atm_aal5_bind __P((struct socket *, struct sockaddr *,
60 static int atm_aal5_listen __P((struct socket *, struct proc *));
61 static int atm_aal5_connect __P((struct socket *, struct sockaddr *,
63 static int atm_aal5_accept __P((struct socket *, struct sockaddr **));
64 static int atm_aal5_disconnect __P((struct socket *));
65 static int atm_aal5_shutdown __P((struct socket *));
66 static int atm_aal5_send __P((struct socket *, int, KBuffer *,
67 struct sockaddr *, KBuffer *, struct proc *));
68 static int atm_aal5_abort __P((struct socket *));
69 static int atm_aal5_control __P((struct socket *, u_long, caddr_t,
70 struct ifnet *, struct proc *));
71 static int atm_aal5_sense __P((struct socket *, struct stat *));
72 static int atm_aal5_sockaddr __P((struct socket *, struct sockaddr **));
73 static int atm_aal5_peeraddr __P((struct socket *, struct sockaddr **));
74 static int atm_aal5_incoming __P((void *, Atm_connection *,
75 Atm_attributes *, void **));
76 static void atm_aal5_cpcs_data __P((void *, KBuffer *));
77 static caddr_t atm_aal5_getname __P((void *));
80 #if (defined(__FreeBSD__) && (BSD >= 199506))
82 * New-style socket request routines
84 struct pr_usrreqs atm_aal5_usrreqs = {
85 atm_aal5_abort, /* pru_abort */
86 atm_aal5_accept, /* pru_accept */
87 atm_aal5_attach, /* pru_attach */
88 atm_aal5_bind, /* pru_bind */
89 atm_aal5_connect, /* pru_connect */
90 pru_connect2_notsupp, /* pru_connect2 */
91 atm_aal5_control, /* pru_control */
92 atm_aal5_detach, /* pru_detach */
93 atm_aal5_disconnect, /* pru_disconnect */
94 atm_aal5_listen, /* pru_listen */
95 atm_aal5_peeraddr, /* pru_peeraddr */
96 pru_rcvd_notsupp, /* pru_rcvd */
97 pru_rcvoob_notsupp, /* pru_rcvoob */
98 atm_aal5_send, /* pru_send */
99 atm_aal5_sense, /* pru_sense */
100 atm_aal5_shutdown, /* pru_shutdown */
101 atm_aal5_sockaddr, /* pru_sockaddr */
102 sosend, /* pru_sosend */
103 soreceive, /* pru_soreceive */
104 sopoll /* pru_sopoll */
112 static Atm_endpoint atm_aal5_endpt = {
130 static Atm_attributes atm_aal5_defattr = {
132 CMAPI_CPCS, /* api */
183 * Handy common code macros
186 #define ATM_INTRO(f) \
189 ATM_DEBUG2("aal5 socket %s (%p)\n", f, so); \
191 * Stack queue should have been drained \
193 if (atm_stackq_head != NULL) \
194 panic("atm_aal5: stack queue not empty"); \
197 #define ATM_INTRO(f) \
203 #define ATM_OUTRO() \
206 * Drain any deferred calls \
213 #define ATM_RETERR(errno) { \
220 * Attach protocol to socket
223 * so pointer to socket
224 * proto protocol identifier
225 * p pointer to process
228 * 0 request processed
229 * errno error processing request - reason indicated
233 atm_aal5_attach(so, proto, p)
243 * Do general attach stuff
245 err = atm_sock_attach(so, atm_aal5_sendspace, atm_aal5_recvspace);
250 * Finish up any protocol specific stuff
252 atp = sotoatmpcb(so);
253 atp->atp_type = ATPT_AAL5;
256 * Set default connection attributes
258 atp->atp_attr = atm_aal5_defattr;
259 strncpy(atp->atp_name, "(AAL5)", T_ATM_APP_NAME_LEN);
266 * Detach protocol from socket
269 * so pointer to socket
272 * 0 request processed
273 * errno error processing request - reason indicated
282 err = atm_sock_detach(so);
289 * Bind address to socket
292 * so pointer to socket
293 * addr pointer to protocol address
294 * p pointer to process
297 * 0 request processed
298 * errno error processing request - reason indicated
302 atm_aal5_bind(so, addr, p)
304 struct sockaddr *addr;
309 err = atm_sock_bind(so, addr);
316 * Listen for incoming connections
319 * so pointer to socket
320 * p pointer to process
323 * 0 request processed
324 * errno error processing request - reason indicated
328 atm_aal5_listen(so, p)
334 err = atm_sock_listen(so, &atm_aal5_endpt);
341 * Connect socket to peer
344 * so pointer to socket
345 * addr pointer to protocol address
346 * p pointer to process
349 * 0 request processed
350 * errno error processing request - reason indicated
354 atm_aal5_connect(so, addr, p)
356 struct sockaddr *addr;
361 ATM_INTRO("connect");
363 atp = sotoatmpcb(so);
366 * Resize send socket buffer to maximum sdu size
368 if (atp->atp_attr.aal.tag == T_ATM_PRESENT) {
371 size = atp->atp_attr.aal.v.aal5.forward_max_SDU_size;
372 if (size != T_ATM_ABSENT)
373 (void) sbreserve(&so->so_snd, size);
377 * Now get the socket connected
379 err = atm_sock_connect(so, addr, &atm_aal5_endpt);
386 * Accept pending connection
389 * so pointer to socket
390 * addr pointer to pointer to contain protocol address
393 * 0 request processed
394 * errno error processing request - reason indicated
398 atm_aal5_accept(so, addr)
400 struct sockaddr **addr;
405 * Everything is pretty much done already, we just need to
406 * return the caller's address to the user.
408 err = atm_sock_peeraddr(so, addr);
415 * Disconnect connected socket
418 * so pointer to socket
421 * 0 request processed
422 * errno error processing request - reason indicated
426 atm_aal5_disconnect(so)
429 ATM_INTRO("disconnect");
431 err = atm_sock_disconnect(so);
438 * Shut down socket data transmission
441 * so pointer to socket
444 * 0 request processed
445 * errno error processing request - reason indicated
449 atm_aal5_shutdown(so)
452 ATM_INTRO("shutdown");
464 * so pointer to socket
465 * flags send data flags
466 * m pointer to buffer containing user data
467 * addr pointer to protocol address
468 * control pointer to buffer containing protocol control data
469 * p pointer to process
472 * 0 request processed
473 * errno error processing request - reason indicated
477 atm_aal5_send(so, flags, m, addr, control, p)
481 struct sockaddr *addr;
490 * We don't support any control functions
495 clen = KB_LEN(control);
504 * We also don't support any flags or send-level addressing
512 * All we've got left is the data, so push it out
514 atp = sotoatmpcb(so);
515 err = atm_cm_cpcs_data(atp->atp_conn, m);
518 * Output problem, drop packet
520 atm_sock_stat.as_outdrop[atp->atp_type]++;
529 * Abnormally terminate service
532 * so pointer to socket
535 * 0 request processed
536 * errno error processing request - reason indicated
545 so->so_error = ECONNABORTED;
546 err = atm_sock_detach(so);
553 * Do control operation - ioctl system call
556 * so pointer to socket
558 * data pointer to code specific parameter data area
559 * ifp pointer to ifnet structure if it's an interface ioctl
560 * p pointer to process
563 * 0 request processed
564 * errno error processing request - reason indicated
568 atm_aal5_control(so, cmd, data, ifp, p)
575 ATM_INTRO("control");
587 * Sense socket status - fstat system call
590 * so pointer to socket
591 * st pointer to file status structure
594 * 0 request processed
595 * errno error processing request - reason indicated
599 atm_aal5_sense(so, st)
606 * Just return the max sdu size for the connection
608 st->st_blksize = so->so_snd.sb_hiwat;
615 * Retrieve local socket address
618 * so pointer to socket
619 * addr pointer to pointer to contain protocol address
622 * 0 request processed
623 * errno error processing request - reason indicated
627 atm_aal5_sockaddr(so, addr)
629 struct sockaddr **addr;
631 ATM_INTRO("sockaddr");
633 err = atm_sock_sockaddr(so, addr);
640 * Retrieve peer socket address
643 * so pointer to socket
644 * addr pointer to pointer to contain protocol address
647 * 0 request processed
648 * errno error processing request - reason indicated
652 atm_aal5_peeraddr(so, addr)
654 struct sockaddr **addr;
656 ATM_INTRO("peeraddr");
658 err = atm_sock_peeraddr(so, addr);
665 * Process Incoming Calls
667 * This function will receive control when an incoming call has been matched
668 * to one of our registered listen parameter blocks. Assuming the call passes
669 * acceptance criteria and all required resources are available, we will
670 * create a new protocol control block and socket association. We must
671 * then await notification of the final SVC setup results. If any
672 * problems are encountered, we will just tell the connection manager to
678 * tok owner's matched listening token
679 * cop pointer to incoming call's connection block
680 * ap pointer to incoming call's attributes
681 * tokp pointer to location to store our connection token
685 * errno call rejected - reason indicated
689 atm_aal5_incoming(tok, cop, ap, tokp)
700 * Allocate a new socket and pcb for this connection.
702 * Note that our attach function will be called via sonewconn
703 * and it will allocate and setup most of the pcb.
705 atm_sock_stat.as_inconn[atp->atp_type]++;
706 #if (defined(BSD) && (BSD >= 199103))
707 so = sonewconn(atp->atp_socket, 0);
709 so = sonewconn(atp->atp_socket);
714 * Finish pcb setup and pass pcb back to CM
716 atp = sotoatmpcb(so);
721 atm_sock_stat.as_connfail[atp->atp_type]++;
729 * Process Socket VCC Input Data
732 * tok owner's connection token (atm_pcb)
733 * m pointer to input packet buffer chain
740 atm_aal5_cpcs_data(tok, m)
748 so = atp->atp_socket;
753 * Ensure that the socket is able to receive data and
754 * that there's room in the socket buffer
756 if (((so->so_state & SS_ISCONNECTED) == 0) ||
757 (so->so_state & SS_CANTRCVMORE) ||
758 (len > sbspace(&so->so_rcv))) {
759 atm_sock_stat.as_indrop[atp->atp_type]++;
765 * Queue the data and notify the user
767 sbappendrecord(&so->so_rcv, m);
775 * Process getsockopt/setsockopt system calls
778 * so pointer to socket
779 * sopt pointer to socket option info
782 * 0 request processed
783 * errno error processing request - reason indicated
787 atm_aal5_ctloutput(so, sopt)
789 struct sockopt *sopt;
793 ATM_INTRO("ctloutput");
796 * Make sure this is for us
798 if (sopt->sopt_level != T_ATM_SIGNALING) {
801 atp = sotoatmpcb(so);
803 ATM_RETERR(ENOTCONN);
806 switch (sopt->sopt_dir) {
814 * Validate socket state
816 switch (sopt->sopt_name) {
819 case T_ATM_DROP_LEAF:
820 if ((so->so_state & SS_ISCONNECTED) == 0) {
821 ATM_RETERR(ENOTCONN);
829 if (so->so_state & SS_ISCONNECTED) {
836 * Validate and save user-supplied option data
838 err = atm_sock_setopt(so, sopt, atp);
850 err = atm_sock_getopt(so, sopt, atp);
860 * Initialize AAL5 Sockets
873 * Register our endpoint
875 if (atm_endpoint_register(&atm_aal5_endpt))
876 panic("atm_aal5_init: register");
879 * Set default connection attributes
881 atm_aal5_defattr.aal.v.aal5.forward_max_SDU_size = T_ATM_ABSENT;
882 atm_aal5_defattr.aal.v.aal5.backward_max_SDU_size = T_ATM_ABSENT;
883 atm_aal5_defattr.aal.v.aal5.SSCS_type = T_ATM_NULL;
888 * Get Connection's Application/Owner Name
891 * tok owner's connection token (atm_pcb)
894 * addr pointer to string containing our name
898 atm_aal5_getname(tok)
903 return (atp->atp_name);