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 1.9 2005/06/02 22:37:45 dillon 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,
52 struct pru_attach_info *);
53 static int atm_aal5_detach (struct socket *);
54 static int atm_aal5_bind (struct socket *, struct sockaddr *,
56 static int atm_aal5_listen (struct socket *, struct thread *);
57 static int atm_aal5_connect (struct socket *, struct sockaddr *,
59 static int atm_aal5_accept (struct socket *, struct sockaddr **);
60 static int atm_aal5_disconnect (struct socket *);
61 static int atm_aal5_shutdown (struct socket *);
62 static int atm_aal5_send (struct socket *, int, KBuffer *,
63 struct sockaddr *, KBuffer *, struct thread *);
64 static int atm_aal5_abort (struct socket *);
65 static int atm_aal5_control (struct socket *, u_long, caddr_t,
66 struct ifnet *, struct thread *);
67 static int atm_aal5_sense (struct socket *, struct stat *);
68 static int atm_aal5_sockaddr (struct socket *, struct sockaddr **);
69 static int atm_aal5_peeraddr (struct socket *, struct sockaddr **);
70 static int atm_aal5_incoming (void *, Atm_connection *,
71 Atm_attributes *, void **);
72 static void atm_aal5_cpcs_data (void *, KBuffer *);
73 static caddr_t atm_aal5_getname (void *);
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 */
105 static Atm_endpoint atm_aal5_endpt = {
123 static Atm_attributes atm_aal5_defattr = {
125 CMAPI_CPCS, /* api */
176 * Handy common code macros
179 #define ATM_INTRO(f) \
182 ATM_DEBUG2("aal5 socket %s (%p)\n", f, so); \
184 * Stack queue should have been drained \
186 if (atm_stackq_head != NULL) \
187 panic("atm_aal5: stack queue not empty"); \
189 #else /* !DIAGNOSTIC */
190 #define ATM_INTRO(f) \
194 #endif /* DIAGNOSTIC */
196 #define ATM_OUTRO() \
198 * Drain any deferred calls \
205 #define ATM_RETERR(errno) { \
212 * Attach protocol to socket
215 * so pointer to socket
216 * proto protocol identifier
217 * p pointer to process
220 * 0 request processed
221 * errno error processing request - reason indicated
225 atm_aal5_attach(so, proto, ai)
228 struct pru_attach_info *ai;
235 * Do general attach stuff
237 err = atm_sock_attach(so, atm_aal5_sendspace, atm_aal5_recvspace,
243 * Finish up any protocol specific stuff
245 atp = sotoatmpcb(so);
246 atp->atp_type = ATPT_AAL5;
249 * Set default connection attributes
251 atp->atp_attr = atm_aal5_defattr;
252 strncpy(atp->atp_name, "(AAL5)", T_ATM_APP_NAME_LEN);
260 * Detach protocol from socket
263 * so pointer to socket
266 * 0 request processed
267 * errno error processing request - reason indicated
276 err = atm_sock_detach(so);
283 * Bind address to socket
286 * so pointer to socket
287 * addr pointer to protocol address
288 * p pointer to process
291 * 0 request processed
292 * errno error processing request - reason indicated
296 atm_aal5_bind(so, addr, td)
298 struct sockaddr *addr;
303 err = atm_sock_bind(so, addr);
310 * Listen for incoming connections
313 * so pointer to socket
314 * p pointer to process
317 * 0 request processed
318 * errno error processing request - reason indicated
322 atm_aal5_listen(struct socket *so, struct thread *td)
326 err = atm_sock_listen(so, &atm_aal5_endpt);
333 * Connect socket to peer
336 * so pointer to socket
337 * addr pointer to protocol address
338 * p pointer to process
341 * 0 request processed
342 * errno error processing request - reason indicated
346 atm_aal5_connect(struct socket *so, struct sockaddr *addr, thread_t td)
350 ATM_INTRO("connect");
352 atp = sotoatmpcb(so);
355 * Resize send socket buffer to maximum sdu size
357 if (atp->atp_attr.aal.tag == T_ATM_PRESENT) {
360 size = atp->atp_attr.aal.v.aal5.forward_max_SDU_size;
361 if (size != T_ATM_ABSENT)
362 if (!sbreserve(&so->so_snd, size, so,
363 &td->td_proc->p_rlimit[RLIMIT_SBSIZE])) {
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
659 * Called from a critical section.
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 so = sonewconn(atp0->atp_socket, 0);
694 * Finish pcb setup and pass pcb back to CM
696 atp = sotoatmpcb(so);
698 atp->atp_attr = *atp0->atp_conn->co_lattr;
699 strncpy(atp->atp_name, atp0->atp_name, T_ATM_APP_NAME_LEN);
703 atm_sock_stat.as_connfail[atp0->atp_type]++;
711 * Process Socket VCC Input Data
714 * tok owner's connection token (atm_pcb)
715 * m pointer to input packet buffer chain
722 atm_aal5_cpcs_data(tok, m)
730 so = atp->atp_socket;
735 * Ensure that the socket is able to receive data and
736 * that there's room in the socket buffer
738 if (((so->so_state & SS_ISCONNECTED) == 0) ||
739 (so->so_state & SS_CANTRCVMORE) ||
740 (len > sbspace(&so->so_rcv))) {
741 atm_sock_stat.as_indrop[atp->atp_type]++;
747 * Queue the data and notify the user
749 sbappendrecord(&so->so_rcv, m);
757 * Process getsockopt/setsockopt system calls
760 * so pointer to socket
761 * sopt pointer to socket option info
764 * 0 request processed
765 * errno error processing request - reason indicated
769 atm_aal5_ctloutput(struct socket *so, struct sockopt *sopt)
773 ATM_INTRO("ctloutput");
776 * Make sure this is for us
778 if (sopt->sopt_level != T_ATM_SIGNALING) {
781 atp = sotoatmpcb(so);
783 ATM_RETERR(ENOTCONN);
786 switch (sopt->sopt_dir) {
794 * Validate socket state
796 switch (sopt->sopt_name) {
799 case T_ATM_DROP_LEAF:
800 if ((so->so_state & SS_ISCONNECTED) == 0) {
801 ATM_RETERR(ENOTCONN);
810 if (so->so_state & SS_ISCONNECTED) {
817 * Validate and save user-supplied option data
819 err = atm_sock_setopt(so, sopt, atp);
831 err = atm_sock_getopt(so, sopt, atp);
842 * Initialize AAL5 Sockets
855 * Register our endpoint
857 if (atm_endpoint_register(&atm_aal5_endpt))
858 panic("atm_aal5_init: register");
861 * Set default connection attributes
863 atm_aal5_defattr.aal.v.aal5.forward_max_SDU_size = T_ATM_ABSENT;
864 atm_aal5_defattr.aal.v.aal5.backward_max_SDU_size = T_ATM_ABSENT;
865 atm_aal5_defattr.aal.v.aal5.SSCS_type = T_ATM_NULL;
870 * Get Connection's Application/Owner Name
873 * tok owner's connection token (atm_pcb)
876 * addr pointer to string containing our name
880 atm_aal5_getname(tok)
885 return (atp->atp_name);