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ng_lmi.c (69922) ng_lmi.c (70159)
1
2/*
3 * ng_lmi.c
4 *
5 * Copyright (c) 1996-1999 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and

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31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Julian Elischer <julian@freebsd.org>
38 *
1
2/*
3 * ng_lmi.c
4 *
5 * Copyright (c) 1996-1999 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and

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31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Julian Elischer <julian@freebsd.org>
38 *
39 * $FreeBSD: head/sys/netgraph/ng_lmi.c 69922 2000-12-12 18:52:14Z julian $
39 * $FreeBSD: head/sys/netgraph/ng_lmi.c 70159 2000-12-18 20:03:32Z julian $
40 * $Whistle: ng_lmi.c,v 1.38 1999/11/01 09:24:52 julian Exp $
41 */
42
43/*
44 * This node performs the frame relay LMI protocol. It knows how
45 * to do ITU Annex A, ANSI Annex D, and "Group-of-Four" variants
46 * of the protocol.
47 *

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93static ng_rcvmsg_t nglmi_rcvmsg;
94static ng_shutdown_t nglmi_rmnode;
95static ng_newhook_t nglmi_newhook;
96static ng_rcvdata_t nglmi_rcvdata;
97static ng_disconnect_t nglmi_disconnect;
98static int nglmi_checkdata(hook_p hook, struct mbuf *m, meta_p meta);
99
100static struct ng_type typestruct = {
40 * $Whistle: ng_lmi.c,v 1.38 1999/11/01 09:24:52 julian Exp $
41 */
42
43/*
44 * This node performs the frame relay LMI protocol. It knows how
45 * to do ITU Annex A, ANSI Annex D, and "Group-of-Four" variants
46 * of the protocol.
47 *

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93static ng_rcvmsg_t nglmi_rcvmsg;
94static ng_shutdown_t nglmi_rmnode;
95static ng_newhook_t nglmi_newhook;
96static ng_rcvdata_t nglmi_rcvdata;
97static ng_disconnect_t nglmi_disconnect;
98static int nglmi_checkdata(hook_p hook, struct mbuf *m, meta_p meta);
99
100static struct ng_type typestruct = {
101 NG_VERSION,
101 NG_ABI_VERSION,
102 NG_LMI_NODE_TYPE,
103 NULL,
104 nglmi_constructor,
105 nglmi_rcvmsg,
106 nglmi_rmnode,
107 nglmi_newhook,
108 NULL,
109 NULL,

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445 sc->poll_count--;
446}
447
448/*
449 * Receive a netgraph control message.
450 */
451static int
452nglmi_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
102 NG_LMI_NODE_TYPE,
103 NULL,
104 nglmi_constructor,
105 nglmi_rcvmsg,
106 nglmi_rmnode,
107 nglmi_newhook,
108 NULL,
109 NULL,

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445 sc->poll_count--;
446}
447
448/*
449 * Receive a netgraph control message.
450 */
451static int
452nglmi_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
453 struct ng_mesg **resp, hook_p lasthook)
453 struct ng_mesg **rptr, hook_p lasthook)
454{
454{
455 int error = 0;
456 sc_p sc = node->private;
455 sc_p sc = node->private;
456 struct ng_mesg *resp = NULL;
457 int error = 0;
457
458 switch (msg->header.typecookie) {
459 case NGM_GENERIC_COOKIE:
460 switch (msg->header.cmd) {
461 case NGM_TEXT_STATUS:
462 {
463 char *arg;
464 int pos, count;
465
458
459 switch (msg->header.typecookie) {
460 case NGM_GENERIC_COOKIE:
461 switch (msg->header.cmd) {
462 case NGM_TEXT_STATUS:
463 {
464 char *arg;
465 int pos, count;
466
466 NG_MKRESPONSE(*resp, msg, NG_TEXTRESPONSE, M_NOWAIT);
467 if (*resp == NULL) {
467 NG_MKRESPONSE(resp, msg, NG_TEXTRESPONSE, M_NOWAIT);
468 if (resp == NULL) {
468 error = ENOMEM;
469 break;
470 }
469 error = ENOMEM;
470 break;
471 }
471 arg = (*resp)->data;
472 arg = resp->data;
472 pos = sprintf(arg, "protocol %s ", sc->protoname);
473 if (sc->flags & SCF_FIXED)
474 pos += sprintf(arg + pos, "fixed\n");
475 else if (sc->flags & SCF_AUTO)
476 pos += sprintf(arg + pos, "auto-detecting\n");
477 else
478 pos += sprintf(arg + pos, "auto on dlci %d\n",
479 (sc->lmi_channel == sc->lmi_channel0) ?

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489 count++) {
490 if (sc->dlci_state[count]) {
491 pos += sprintf(arg + pos,
492 "dlci %d %s\n", count,
493 (sc->dlci_state[count]
494 == DLCI_UP) ? "up" : "down");
495 }
496 }
473 pos = sprintf(arg, "protocol %s ", sc->protoname);
474 if (sc->flags & SCF_FIXED)
475 pos += sprintf(arg + pos, "fixed\n");
476 else if (sc->flags & SCF_AUTO)
477 pos += sprintf(arg + pos, "auto-detecting\n");
478 else
479 pos += sprintf(arg + pos, "auto on dlci %d\n",
480 (sc->lmi_channel == sc->lmi_channel0) ?

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490 count++) {
491 if (sc->dlci_state[count]) {
492 pos += sprintf(arg + pos,
493 "dlci %d %s\n", count,
494 (sc->dlci_state[count]
495 == DLCI_UP) ? "up" : "down");
496 }
497 }
497 (*resp)->header.arglen = pos + 1;
498 resp->header.arglen = pos + 1;
498 break;
499 }
500 default:
501 error = EINVAL;
502 break;
503 }
504 break;
505 case NGM_LMI_COOKIE:
506 switch (msg->header.cmd) {
507 case NGM_LMI_GET_STATUS:
508 {
509 struct nglmistat *stat;
510 int k;
511
499 break;
500 }
501 default:
502 error = EINVAL;
503 break;
504 }
505 break;
506 case NGM_LMI_COOKIE:
507 switch (msg->header.cmd) {
508 case NGM_LMI_GET_STATUS:
509 {
510 struct nglmistat *stat;
511 int k;
512
512 NG_MKRESPONSE(*resp, msg, sizeof(*stat), M_NOWAIT);
513 if (!*resp) {
513 NG_MKRESPONSE(resp, msg, sizeof(*stat), M_NOWAIT);
514 if (!resp) {
514 error = ENOMEM;
515 break;
516 }
515 error = ENOMEM;
516 break;
517 }
517 stat = (struct nglmistat *) (*resp)->data;
518 stat = (struct nglmistat *) resp->data;
518 strncpy(stat->proto,
519 sc->protoname, sizeof(stat->proto) - 1);
520 strncpy(stat->hook,
521 sc->protoname, sizeof(stat->hook) - 1);
522 stat->autod = !!(sc->flags & SCF_AUTO);
523 stat->fixed = !!(sc->flags & SCF_FIXED);
524 for (k = 0; k <= MAXDLCI; k++) {
525 switch (sc->dlci_state[k]) {

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537 error = EINVAL;
538 break;
539 }
540 break;
541 default:
542 error = EINVAL;
543 break;
544 }
519 strncpy(stat->proto,
520 sc->protoname, sizeof(stat->proto) - 1);
521 strncpy(stat->hook,
522 sc->protoname, sizeof(stat->hook) - 1);
523 stat->autod = !!(sc->flags & SCF_AUTO);
524 stat->fixed = !!(sc->flags & SCF_FIXED);
525 for (k = 0; k <= MAXDLCI; k++) {
526 switch (sc->dlci_state[k]) {

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538 error = EINVAL;
539 break;
540 }
541 break;
542 default:
543 error = EINVAL;
544 break;
545 }
546
547 if (rptr)
548 *rptr = resp;
549 else if (resp != NULL)
550 FREE(resp, M_NETGRAPH);
551
545 FREE(msg, M_NETGRAPH);
546 return (error);
547}
548
549#define STEPBY(stepsize) \
550 do { \
551 packetlen -= (stepsize); \
552 data += (stepsize); \

--- 539 unchanged lines hidden --- 		552 FREE(msg, M_NETGRAPH);
553 return (error);
554}
555
556#define STEPBY(stepsize) \
557 do { \
558 packetlen -= (stepsize); \
559 data += (stepsize); \

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