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 * @(#) $FreeBSD: src/sys/netatm/atm_aal5.c,v 1.6 1999/10/09 23:24:59 green Exp $
27 * @(#) $DragonFly: src/sys/netproto/atm/atm_aal5.c,v 1.5 2003/08/23 10:06:21 rob Exp $
34 * ATM AAL5 socket protocol processing
38 #include "kern_include.h"
44 u_long atm_aal5_sendspace = 64 * 1024; /* XXX */
45 u_long atm_aal5_recvspace = 64 * 1024; /* XXX */
51 static int atm_aal5_attach (struct socket *, int, struct thread *);
52 static int atm_aal5_detach (struct socket *);
53 static int atm_aal5_bind (struct socket *, struct sockaddr *,
55 static int atm_aal5_listen (struct socket *, struct thread *);
56 static int atm_aal5_connect (struct socket *, struct sockaddr *,
58 static int atm_aal5_accept (struct socket *, struct sockaddr **);
59 static int atm_aal5_disconnect (struct socket *);
60 static int atm_aal5_shutdown (struct socket *);
61 static int atm_aal5_send (struct socket *, int, KBuffer *,
62 struct sockaddr *, KBuffer *, struct thread *);
63 static int atm_aal5_abort (struct socket *);
64 static int atm_aal5_control (struct socket *, u_long, caddr_t,
65 struct ifnet *, struct thread *);
66 static int atm_aal5_sense (struct socket *, struct stat *);
67 static int atm_aal5_sockaddr (struct socket *, struct sockaddr **);
68 static int atm_aal5_peeraddr (struct socket *, struct sockaddr **);
69 static int atm_aal5_incoming (void *, Atm_connection *,
70 Atm_attributes *, void **);
71 static void atm_aal5_cpcs_data (void *, KBuffer *);
72 static caddr_t atm_aal5_getname (void *);
75 #if (defined(__FreeBSD__) && (BSD >= 199506))
77 * New-style socket request routines
79 struct pr_usrreqs atm_aal5_usrreqs = {
80 atm_aal5_abort, /* pru_abort */
81 atm_aal5_accept, /* pru_accept */
82 atm_aal5_attach, /* pru_attach */
83 atm_aal5_bind, /* pru_bind */
84 atm_aal5_connect, /* pru_connect */
85 pru_connect2_notsupp, /* pru_connect2 */
86 atm_aal5_control, /* pru_control */
87 atm_aal5_detach, /* pru_detach */
88 atm_aal5_disconnect, /* pru_disconnect */
89 atm_aal5_listen, /* pru_listen */
90 atm_aal5_peeraddr, /* pru_peeraddr */
91 pru_rcvd_notsupp, /* pru_rcvd */
92 pru_rcvoob_notsupp, /* pru_rcvoob */
93 atm_aal5_send, /* pru_send */
94 atm_aal5_sense, /* pru_sense */
95 atm_aal5_shutdown, /* pru_shutdown */
96 atm_aal5_sockaddr, /* pru_sockaddr */
97 sosend, /* pru_sosend */
98 soreceive, /* pru_soreceive */
99 sopoll /* pru_sopoll */
107 static Atm_endpoint atm_aal5_endpt = {
125 static Atm_attributes atm_aal5_defattr = {
127 CMAPI_CPCS, /* api */
178 * Handy common code macros
181 #define ATM_INTRO(f) \
184 ATM_DEBUG2("aal5 socket %s (%p)\n", f, so); \
186 * Stack queue should have been drained \
188 if (atm_stackq_head != NULL) \
189 panic("atm_aal5: stack queue not empty"); \
191 #else /* !DIAGNOSTIC */
192 #define ATM_INTRO(f) \
196 #endif /* DIAGNOSTIC */
198 #define ATM_OUTRO() \
200 * Drain any deferred calls \
207 #define ATM_RETERR(errno) { \
214 * Attach protocol to socket
217 * so pointer to socket
218 * proto protocol identifier
219 * p pointer to process
222 * 0 request processed
223 * errno error processing request - reason indicated
227 atm_aal5_attach(so, proto, td)
237 * Do general attach stuff
239 err = atm_sock_attach(so, atm_aal5_sendspace, atm_aal5_recvspace);
244 * Finish up any protocol specific stuff
246 atp = sotoatmpcb(so);
247 atp->atp_type = ATPT_AAL5;
250 * Set default connection attributes
252 atp->atp_attr = atm_aal5_defattr;
253 strncpy(atp->atp_name, "(AAL5)", T_ATM_APP_NAME_LEN);
261 * Detach protocol from socket
264 * so pointer to socket
267 * 0 request processed
268 * errno error processing request - reason indicated
277 err = atm_sock_detach(so);
284 * Bind address to socket
287 * so pointer to socket
288 * addr pointer to protocol address
289 * p pointer to process
292 * 0 request processed
293 * errno error processing request - reason indicated
297 atm_aal5_bind(so, addr, td)
299 struct sockaddr *addr;
304 err = atm_sock_bind(so, addr);
311 * Listen for incoming connections
314 * so pointer to socket
315 * p pointer to process
318 * 0 request processed
319 * errno error processing request - reason indicated
323 atm_aal5_listen(struct socket *so, struct thread *td)
327 err = atm_sock_listen(so, &atm_aal5_endpt);
334 * Connect socket to peer
337 * so pointer to socket
338 * addr pointer to protocol address
339 * p pointer to process
342 * 0 request processed
343 * errno error processing request - reason indicated
347 atm_aal5_connect(struct socket *so, struct sockaddr *addr, thread_t td)
351 ATM_INTRO("connect");
353 atp = sotoatmpcb(so);
356 * Resize send socket buffer to maximum sdu size
358 if (atp->atp_attr.aal.tag == T_ATM_PRESENT) {
361 size = atp->atp_attr.aal.v.aal5.forward_max_SDU_size;
362 if (size != T_ATM_ABSENT)
363 if (!sbreserve(&so->so_snd, size, so, td->td_proc)) {
371 * Now get the socket connected
373 err = atm_sock_connect(so, addr, &atm_aal5_endpt);
380 * Accept pending connection
383 * so pointer to socket
384 * addr pointer to pointer to contain protocol address
387 * 0 request processed
388 * errno error processing request - reason indicated
392 atm_aal5_accept(struct socket *so, struct sockaddr **addr)
397 * Everything is pretty much done already, we just need to
398 * return the caller's address to the user.
400 err = atm_sock_peeraddr(so, addr);
407 * Disconnect connected socket
410 * so pointer to socket
413 * 0 request processed
414 * errno error processing request - reason indicated
418 atm_aal5_disconnect(struct socket *so)
420 ATM_INTRO("disconnect");
422 err = atm_sock_disconnect(so);
429 * Shut down socket data transmission
432 * so pointer to socket
435 * 0 request processed
436 * errno error processing request - reason indicated
440 atm_aal5_shutdown(struct socket *so)
442 ATM_INTRO("shutdown");
454 * so pointer to socket
455 * flags send data flags
456 * m pointer to buffer containing user data
457 * addr pointer to protocol address
458 * control pointer to buffer containing protocol control data
459 * p pointer to process
462 * 0 request processed
463 * errno error processing request - reason indicated
471 struct sockaddr *addr,
480 * We don't support any control functions
485 clen = KB_LEN(control);
494 * We also don't support any flags or send-level addressing
502 * All we've got left is the data, so push it out
504 atp = sotoatmpcb(so);
505 err = atm_cm_cpcs_data(atp->atp_conn, m);
508 * Output problem, drop packet
510 atm_sock_stat.as_outdrop[atp->atp_type]++;
520 * Abnormally terminate service
523 * so pointer to socket
526 * 0 request processed
527 * errno error processing request - reason indicated
531 atm_aal5_abort(struct socket *so)
535 so->so_error = ECONNABORTED;
536 err = atm_sock_detach(so);
543 * Do control operation - ioctl system call
546 * so pointer to socket
548 * data pointer to code specific parameter data area
549 * ifp pointer to ifnet structure if it's an interface ioctl
550 * p pointer to process
553 * 0 request processed
554 * errno error processing request - reason indicated
565 ATM_INTRO("control");
577 * Sense socket status - fstat system call
580 * so pointer to socket
581 * st pointer to file status structure
584 * 0 request processed
585 * errno error processing request - reason indicated
589 atm_aal5_sense(struct socket *so, struct stat *st)
594 * Just return the max sdu size for the connection
596 st->st_blksize = so->so_snd.sb_hiwat;
603 * Retrieve local socket address
606 * so pointer to socket
607 * addr pointer to pointer to contain protocol address
610 * 0 request processed
611 * errno error processing request - reason indicated
615 atm_aal5_sockaddr(struct socket *so, struct sockaddr **addr)
617 ATM_INTRO("sockaddr");
619 err = atm_sock_sockaddr(so, addr);
626 * Retrieve peer socket address
629 * so pointer to socket
630 * addr pointer to pointer to contain protocol address
633 * 0 request processed
634 * errno error processing request - reason indicated
638 atm_aal5_peeraddr(struct socket *so, struct sockaddr **addr)
640 ATM_INTRO("peeraddr");
642 err = atm_sock_peeraddr(so, addr);
649 * Process Incoming Calls
651 * This function will receive control when an incoming call has been matched
652 * to one of our registered listen parameter blocks. Assuming the call passes
653 * acceptance criteria and all required resources are available, we will
654 * create a new protocol control block and socket association. We must
655 * then await notification of the final SVC setup results. If any
656 * problems are encountered, we will just tell the connection manager to
662 * tok owner's matched listening token
663 * cop pointer to incoming call's connection block
664 * ap pointer to incoming call's attributes
665 * tokp pointer to location to store our connection token
669 * errno call rejected - reason indicated
673 atm_aal5_incoming(tok, cop, ap, tokp)
679 Atm_pcb *atp0 = tok, *atp;
684 * Allocate a new socket and pcb for this connection.
686 * Note that our attach function will be called via sonewconn
687 * and it will allocate and setup most of the pcb.
689 atm_sock_stat.as_inconn[atp0->atp_type]++;
690 #if (defined(BSD) && (BSD >= 199103))
691 so = sonewconn(atp0->atp_socket, 0);
693 so = sonewconn(atp0->atp_socket);
698 * Finish pcb setup and pass pcb back to CM
700 atp = sotoatmpcb(so);
702 atp->atp_attr = *atp0->atp_conn->co_lattr;
703 strncpy(atp->atp_name, atp0->atp_name, T_ATM_APP_NAME_LEN);
707 atm_sock_stat.as_connfail[atp0->atp_type]++;
715 * Process Socket VCC Input Data
718 * tok owner's connection token (atm_pcb)
719 * m pointer to input packet buffer chain
726 atm_aal5_cpcs_data(tok, m)
734 so = atp->atp_socket;
739 * Ensure that the socket is able to receive data and
740 * that there's room in the socket buffer
742 if (((so->so_state & SS_ISCONNECTED) == 0) ||
743 (so->so_state & SS_CANTRCVMORE) ||
744 (len > sbspace(&so->so_rcv))) {
745 atm_sock_stat.as_indrop[atp->atp_type]++;
751 * Queue the data and notify the user
753 sbappendrecord(&so->so_rcv, m);
761 * Process getsockopt/setsockopt system calls
764 * so pointer to socket
765 * sopt pointer to socket option info
768 * 0 request processed
769 * errno error processing request - reason indicated
773 atm_aal5_ctloutput(struct socket *so, struct sockopt *sopt)
777 ATM_INTRO("ctloutput");
780 * Make sure this is for us
782 if (sopt->sopt_level != T_ATM_SIGNALING) {
785 atp = sotoatmpcb(so);
787 ATM_RETERR(ENOTCONN);
790 switch (sopt->sopt_dir) {
798 * Validate socket state
800 switch (sopt->sopt_name) {
803 case T_ATM_DROP_LEAF:
804 if ((so->so_state & SS_ISCONNECTED) == 0) {
805 ATM_RETERR(ENOTCONN);
814 if (so->so_state & SS_ISCONNECTED) {
821 * Validate and save user-supplied option data
823 err = atm_sock_setopt(so, sopt, atp);
835 err = atm_sock_getopt(so, sopt, atp);
846 * Initialize AAL5 Sockets
859 * Register our endpoint
861 if (atm_endpoint_register(&atm_aal5_endpt))
862 panic("atm_aal5_init: register");
865 * Set default connection attributes
867 atm_aal5_defattr.aal.v.aal5.forward_max_SDU_size = T_ATM_ABSENT;
868 atm_aal5_defattr.aal.v.aal5.backward_max_SDU_size = T_ATM_ABSENT;
869 atm_aal5_defattr.aal.v.aal5.SSCS_type = T_ATM_NULL;
874 * Get Connection's Application/Owner Name
877 * tok owner's connection token (atm_pcb)
880 * addr pointer to string containing our name
884 atm_aal5_getname(tok)
889 return (atp->atp_name);