1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
|
/*
* Copyright (c) 1999, 2000 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*---------------------------------------------------------------------------
*
* i4b_ing.c - isdn4bsd B-channel to netgraph driver
* -------------------------------------------------
*
* $Id: i4b_ing.c,v 1.10 2000/04/27 11:35:00 hm Exp $
*
* $FreeBSD$
*
* last edit-date: [Thu Nov 9 11:29:12 2000]
*
*---------------------------------------------------------------------------*/
#include "i4bing.h"
#if NI4BING > 0
#include "opt_i4b.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <net/if.h>
#include <netgraph/ng_message.h>
#include <netgraph/ng_parse.h>
#include <netgraph/netgraph.h>
#include <machine/i4b_ioctl.h>
#include <machine/i4b_debug.h>
#include <i4b/include/i4b_global.h>
#include <i4b/include/i4b_l3l4.h>
#include <i4b/layer4/i4b_l4.h>
#define I4BINGACCT 1 /* enable accounting messages */
#define I4BINGACCTINTVL 2 /* accounting msg interval in secs */
#define I4BINGMAXQLEN 50 /* max queue length */
/* initialized by L4 */
static drvr_link_t ing_drvr_linktab[NI4BING];
static isdn_link_t *isdn_linktab[NI4BING];
struct ing_softc {
int sc_unit; /* unit number */
int sc_state; /* state of the interface */
call_desc_t *sc_cdp; /* ptr to call descriptor */
int sc_updown; /* soft state of interface */
struct ifqueue sc_fastq; /* interactive traffic */
int sc_dialresp; /* dialresponse */
int sc_lastdialresp;/* last dialresponse */
#if I4BINGACCT
struct callout_handle sc_callout;
int sc_iinb; /* isdn driver # of inbytes */
int sc_ioutb; /* isdn driver # of outbytes */
int sc_inb; /* # of bytes rx'd */
int sc_outb; /* # of bytes tx'd */
int sc_linb; /* last # of bytes rx'd */
int sc_loutb; /* last # of bytes tx'd */
int sc_fn; /* flag, first null acct */
#endif
int sc_inpkt; /* incoming packets */
int sc_outpkt; /* outgoing packets */
struct ifqueue xmitq_hipri; /* hi-priority transmit queue */
struct ifqueue xmitq; /* transmit queue */
node_p node; /* back pointer to node */
char nodename[NG_NODELEN + 1]; /* store our node name */
hook_p debughook;
hook_p hook;
u_int packets_in; /* packets in from downstream */
u_int packets_out; /* packets out towards downstream */
u_int32_t flags;
} ing_softc[NI4BING];
enum ing_states {
ST_IDLE, /* initialized, ready, idle */
ST_DIALING, /* dialling out to remote */
ST_CONNECTED /* connected to remote */
};
static void i4bingattach(void *);
PSEUDO_SET(i4bingattach, i4b_ing);
static void ing_init_linktab(int unit);
static void ing_tx_queue_empty(int unit);
/* ========= NETGRAPH ============= */
#define NG_ING_NODE_TYPE "i4bing" /* node type name */
#define NGM_ING_COOKIE 947513046 /* node type cookie */
/* Hook names */
#define NG_ING_HOOK_DEBUG "debug"
#define NG_ING_HOOK_RAW "rawdata"
/* Netgraph commands understood by this node type */
enum {
NGM_ING_SET_FLAG = 1,
NGM_ING_GET_STATUS,
};
/* This structure is returned by the NGM_ING_GET_STATUS command */
struct ngingstat {
u_int packets_in; /* packets in from downstream */
u_int packets_out; /* packets out towards downstream */
};
/*
* This is used to define the 'parse type' for a struct ngingstat, which
* is bascially a description of how to convert a binary struct ngingstat
* to an ASCII string and back. See ng_parse.h for more info.
*
* This needs to be kept in sync with the above structure definition
*/
#define NG_ING_STATS_TYPE_INFO { \
{ \
{ "packets_in", &ng_parse_int32_type }, \
{ "packets_out", &ng_parse_int32_type }, \
{ NULL }, \
} \
}
/*
* This section contains the netgraph method declarations for the
* sample node. These methods define the netgraph 'type'.
*/
static ng_constructor_t ng_ing_constructor;
static ng_rcvmsg_t ng_ing_rcvmsg;
static ng_shutdown_t ng_ing_rmnode;
static ng_newhook_t ng_ing_newhook;
static ng_connect_t ng_ing_connect;
static ng_rcvdata_t ng_ing_rcvdata;
static ng_disconnect_t ng_ing_disconnect;
/* Parse type for struct ngingstat */
static const struct
ng_parse_struct_info ng_ing_stat_type_info = NG_ING_STATS_TYPE_INFO;
static const struct ng_parse_type ng_ing_stat_type = {
&ng_parse_struct_type,
&ng_ing_stat_type_info
};
/* List of commands and how to convert arguments to/from ASCII */
static const struct ng_cmdlist ng_ing_cmdlist[] = {
{
NGM_ING_COOKIE,
NGM_ING_GET_STATUS,
"getstatus",
NULL,
&ng_ing_stat_type,
},
{
NGM_ING_COOKIE,
NGM_ING_SET_FLAG,
"setflag",
&ng_parse_int32_type,
NULL
},
{ 0 }
};
/* Netgraph node type descriptor */
static struct ng_type typestruct = {
NG_VERSION,
NG_ING_NODE_TYPE,
NULL,
ng_ing_constructor,
ng_ing_rcvmsg,
ng_ing_rmnode,
ng_ing_newhook,
NULL,
ng_ing_connect,
ng_ing_rcvdata,
ng_ing_rcvdata,
ng_ing_disconnect,
ng_ing_cmdlist
};
NETGRAPH_INIT_ORDERED(ing, &typestruct, SI_SUB_DRIVERS, SI_ORDER_ANY);
/*===========================================================================*
* DEVICE DRIVER ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* interface attach routine at kernel boot time
*---------------------------------------------------------------------------*/
static void
i4bingattach(void *dummy)
{
struct ing_softc *sc = ing_softc;
int i;
int ret;
printf("i4bing: %d i4b NetGraph ISDN B-channel device(s) attached\n", NI4BING);
for(i=0; i < NI4BING; sc++, i++)
{
sc->sc_unit = i;
ing_init_linktab(i);
NDBGL4(L4_DIALST, "setting dial state to ST_IDLE");
sc->sc_state = ST_IDLE;
sc->sc_fastq.ifq_maxlen = I4BINGMAXQLEN;
#if I4BINGACCT
callout_handle_init(&sc->sc_callout);
sc->sc_iinb = 0;
sc->sc_ioutb = 0;
sc->sc_inb = 0;
sc->sc_outb = 0;
sc->sc_linb = 0;
sc->sc_loutb = 0;
sc->sc_fn = 1;
#endif
sc->sc_inpkt = 0;
sc->sc_outpkt = 0;
sc->sc_updown = SOFT_ENA; /* soft enabled */
sc->sc_dialresp = DSTAT_NONE; /* no response */
sc->sc_lastdialresp = DSTAT_NONE;
/* setup a netgraph node */
if ((ret = ng_make_node_common(&typestruct, &sc->node)))
{
printf("ing: ng_make_node_common, ret = %d\n!", ret);
}
sc->node->private = sc;
sc->xmitq.ifq_maxlen = IFQ_MAXLEN;
sc->xmitq_hipri.ifq_maxlen = IFQ_MAXLEN;
/* name the netgraph node */
sprintf(sc->nodename, "%s%d", NG_ING_NODE_TYPE, sc->sc_unit);
if(ng_name_node(sc->node, sc->nodename))
{
ng_rmnode(sc->node);
ng_unref(sc->node);
}
}
}
#ifdef I4BINGACCT
/*---------------------------------------------------------------------------*
* accounting timeout routine
*---------------------------------------------------------------------------*/
static void
ing_timeout(struct ing_softc *sc)
{
bchan_statistics_t bs;
int unit = sc->sc_unit;
/* get # of bytes in and out from the HSCX driver */
(*isdn_linktab[unit]->bch_stat)
(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel, &bs);
sc->sc_ioutb += bs.outbytes;
sc->sc_iinb += bs.inbytes;
if((sc->sc_iinb != sc->sc_linb) || (sc->sc_ioutb != sc->sc_loutb) || sc->sc_fn)
{
int ri = (sc->sc_iinb - sc->sc_linb)/I4BINGACCTINTVL;
int ro = (sc->sc_ioutb - sc->sc_loutb)/I4BINGACCTINTVL;
if((sc->sc_iinb == sc->sc_linb) && (sc->sc_ioutb == sc->sc_loutb))
sc->sc_fn = 0;
else
sc->sc_fn = 1;
sc->sc_linb = sc->sc_iinb;
sc->sc_loutb = sc->sc_ioutb;
i4b_l4_accounting(BDRV_ING, unit, ACCT_DURING,
sc->sc_ioutb, sc->sc_iinb, ro, ri, sc->sc_ioutb, sc->sc_iinb);
}
sc->sc_callout = timeout((TIMEOUT_FUNC_T)ing_timeout,
(void *)sc, I4BINGACCTINTVL*hz);
}
#endif /* I4BINGACCT */
#if 0
/*---------------------------------------------------------------------------*
* clear the interface's send queues
*---------------------------------------------------------------------------*/
static void
ingclearqueue(struct ifqueue *iq)
{
int x;
struct mbuf *m;
for(;;)
{
x = splimp();
IF_DEQUEUE(iq, m);
splx(x);
if(m)
m_freem(m);
else
break;
}
}
#endif
/*===========================================================================*
* ISDN INTERFACE ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* this routine is called from L4 handler at connect time
*---------------------------------------------------------------------------*/
static void
ing_connect(int unit, void *cdp)
{
struct ing_softc *sc = &ing_softc[unit];
int s;
sc->sc_cdp = (call_desc_t *)cdp;
s = SPLI4B();
NDBGL4(L4_DIALST, "ing%d: setting dial state to ST_CONNECTED", unit);
sc->sc_dialresp = DSTAT_NONE;
sc->sc_lastdialresp = DSTAT_NONE;
#if I4BINGACCT
sc->sc_iinb = 0;
sc->sc_ioutb = 0;
sc->sc_inb = 0;
sc->sc_outb = 0;
sc->sc_linb = 0;
sc->sc_loutb = 0;
sc->sc_callout = timeout((TIMEOUT_FUNC_T)ing_timeout,
(void *)sc, I4BINGACCTINTVL*hz);
#endif
sc->sc_state = ST_CONNECTED;
splx(s);
}
/*---------------------------------------------------------------------------*
* this routine is called from L4 handler at disconnect time
*---------------------------------------------------------------------------*/
static void
ing_disconnect(int unit, void *cdp)
{
call_desc_t *cd = (call_desc_t *)cdp;
struct ing_softc *sc = &ing_softc[unit];
/* new stuff to check that the active channel is being closed */
if (cd != sc->sc_cdp)
{
NDBGL4(L4_INGDBG, "ing%d: channel %d not active",
cd->driver_unit, cd->channelid);
return;
}
#if I4BINGACCT
untimeout((TIMEOUT_FUNC_T)ing_timeout,
(void *)sc, sc->sc_callout);
#endif
i4b_l4_accounting(BDRV_ING, cd->driver_unit, ACCT_FINAL,
sc->sc_ioutb, sc->sc_iinb, 0, 0, sc->sc_outb, sc->sc_inb);
sc->sc_cdp = (call_desc_t *)0;
NDBGL4(L4_DIALST, "setting dial state to ST_IDLE");
sc->sc_dialresp = DSTAT_NONE;
sc->sc_lastdialresp = DSTAT_NONE;
sc->sc_state = ST_IDLE;
}
/*---------------------------------------------------------------------------*
* this routine is used to give a feedback from userland daemon
* in case of dial problems
*---------------------------------------------------------------------------*/
static void
ing_dialresponse(int unit, int status, cause_t cause)
{
struct ing_softc *sc = &ing_softc[unit];
sc->sc_dialresp = status;
NDBGL4(L4_INGDBG, "ing%d: last=%d, this=%d",
unit, sc->sc_lastdialresp, sc->sc_dialresp);
if(status != DSTAT_NONE)
{
NDBGL4(L4_INGDBG, "ing%d: clearing queues", unit);
/* ingclearqueues(sc); */
}
}
/*---------------------------------------------------------------------------*
* interface soft up/down
*---------------------------------------------------------------------------*/
static void
ing_updown(int unit, int updown)
{
struct ing_softc *sc = &ing_softc[unit];
sc->sc_updown = updown;
}
/*---------------------------------------------------------------------------*
* this routine is called from the HSCX interrupt handler
* when a new frame (mbuf) has been received and was put on
* the rx queue. It is assumed that this routines runs at
* pri level splimp() ! Keep it short !
*---------------------------------------------------------------------------*/
static void
ing_rx_data_rdy(int unit)
{
register struct ing_softc *sc = &ing_softc[unit];
register struct mbuf *m;
if((m = *isdn_linktab[unit]->rx_mbuf) == NULL)
return;
#if I4BINGACCT
sc->sc_inb += m->m_pkthdr.len;
#endif
m->m_pkthdr.rcvif = NULL;
sc->sc_inpkt++;
ng_queue_data(sc->hook, m, NULL);
}
/*---------------------------------------------------------------------------*
* this routine is called from the HSCX interrupt handler
* when the last frame has been sent out and there is no
* further frame (mbuf) in the tx queue.
*---------------------------------------------------------------------------*/
static void
ing_tx_queue_empty(int unit)
{
register struct ing_softc *sc = &ing_softc[unit];
register struct mbuf *m;
int x = 0;
if(sc->sc_state != ST_CONNECTED)
return;
for(;;)
{
IF_DEQUEUE(&sc->xmitq_hipri, m);
if(m == NULL)
{
IF_DEQUEUE(&sc->xmitq, m);
if(m == NULL)
break;
}
#if I4BINGACCT
sc->sc_outb += m->m_pkthdr.len;
#endif
x = 1;
if(IF_QFULL(isdn_linktab[unit]->tx_queue))
{
NDBGL4(L4_INGDBG, "ing%d: tx queue full!", unit);
m_freem(m);
}
else
{
IF_ENQUEUE(isdn_linktab[unit]->tx_queue, m);
}
}
if(x)
(*isdn_linktab[unit]->bch_tx_start)(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel);
}
/*---------------------------------------------------------------------------*
* this routine is called from the HSCX interrupt handler
* each time a packet is received or transmitted. It should
* be used to implement an activity timeout mechanism.
*---------------------------------------------------------------------------*/
static void
ing_activity(int unit, int rxtx)
{
ing_softc[unit].sc_cdp->last_active_time = SECOND;
}
/*---------------------------------------------------------------------------*
* return this drivers linktab address
*---------------------------------------------------------------------------*/
drvr_link_t *
ing_ret_linktab(int unit)
{
return(&ing_drvr_linktab[unit]);
}
/*---------------------------------------------------------------------------*
* setup the isdn_linktab for this driver
*---------------------------------------------------------------------------*/
void
ing_set_linktab(int unit, isdn_link_t *ilt)
{
isdn_linktab[unit] = ilt;
}
/*---------------------------------------------------------------------------*
* initialize this drivers linktab
*---------------------------------------------------------------------------*/
static void
ing_init_linktab(int unit)
{
ing_drvr_linktab[unit].unit = unit;
ing_drvr_linktab[unit].bch_rx_data_ready = ing_rx_data_rdy;
ing_drvr_linktab[unit].bch_tx_queue_empty = ing_tx_queue_empty;
ing_drvr_linktab[unit].bch_activity = ing_activity;
ing_drvr_linktab[unit].line_connected = ing_connect;
ing_drvr_linktab[unit].line_disconnected = ing_disconnect;
ing_drvr_linktab[unit].dial_response = ing_dialresponse;
ing_drvr_linktab[unit].updown_ind = ing_updown;
}
/*===========================================================================*
* NETGRAPH INTERFACE ROUTINES
*===========================================================================*/
/*---------------------------------------------------------------------------*
* It is not possible or allowable to create a node of this type.
* If the hardware exists, it will already have created it.
*---------------------------------------------------------------------------*/
static int
ng_ing_constructor(node_p *nodep)
{
return(EINVAL);
}
/*---------------------------------------------------------------------------*
* Give our ok for a hook to be added...
* Add the hook's private info to the hook structure.
*---------------------------------------------------------------------------*/
static int
ng_ing_newhook(node_p node, hook_p hook, const char *name)
{
struct ing_softc *sc = node->private;
/*
* check if it's our friend the debug hook
*/
if(strcmp(name, NG_ING_HOOK_DEBUG) == 0)
{
hook->private = NULL; /* paranoid */
sc->debughook = hook;
return (0);
}
/*
* Check for raw mode hook.
*/
if(strcmp(name, NG_ING_HOOK_RAW) == 0)
{
hook->private = sc;
sc->hook = hook;
return (0);
}
return (EINVAL);
}
/*---------------------------------------------------------------------------*
* Get a netgraph control message.
* Check it is one we understand. If needed, send a response.
* We could save the address for an async action later, but don't here.
* Always free the message.
* The response should be in a malloc'd region that the caller can 'free'.
* A response is not required.
*---------------------------------------------------------------------------*/
#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
static int
ng_ing_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
struct ng_mesg **rptr, hook_p lasthook)
#else
static int
ng_ing_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
struct ng_mesg **rptr)
#endif
{
struct ing_softc *sc = node->private;
struct ng_mesg *resp = NULL;
int error = 0;
if(msg->header.typecookie == NGM_GENERIC_COOKIE)
{
switch(msg->header.cmd)
{
case NGM_TEXT_STATUS:
{
char *arg;
char *p;
int pos = 0;
NG_MKRESPONSE(resp, msg, sizeof(struct ng_mesg) + NG_TEXTRESPONSE, M_NOWAIT);
if (resp == NULL)
{
error = ENOMEM;
break;
}
arg = (char *) resp->data;
switch(sc->sc_state)
{
case ST_IDLE:
p = "idle";
break;
case ST_DIALING:
p = "dialing";
break;
case ST_CONNECTED:
p = "connected";
break;
default:
p = "???";
break;
}
pos = sprintf(arg, "state = %s (%d)\n", p, sc->sc_state);
#if I4BINGACCT
pos += sprintf(arg + pos, "%d bytes in, %d bytes out\n", sc->sc_inb, sc->sc_outb);
#endif
pos += sprintf(arg + pos, "%d pkts in, %d pkts out\n", sc->sc_inpkt, sc->sc_outpkt);
resp->header.arglen = pos + 1;
break;
}
default:
error = EINVAL;
break;
}
}
else if(msg->header.typecookie == NGM_ING_COOKIE)
{
switch (msg->header.cmd)
{
case NGM_ING_GET_STATUS:
{
struct ngingstat *stats;
NG_MKRESPONSE(resp, msg, sizeof(*stats), M_NOWAIT);
if (!resp)
{
error = ENOMEM;
break;
}
stats = (struct ngingstat *) resp->data;
stats->packets_in = sc->packets_in;
stats->packets_out = sc->packets_out;
break;
}
case NGM_ING_SET_FLAG:
if (msg->header.arglen != sizeof(u_int32_t))
{
error = EINVAL;
break;
}
sc->flags = *((u_int32_t *) msg->data);
break;
default:
error = EINVAL; /* unknown command */
break;
}
}
else
{
error = EINVAL; /* unknown cookie type */
}
/* Take care of synchronous response, if any */
if (rptr)
*rptr = resp;
else if (resp)
FREE(resp, M_NETGRAPH);
/* Free the message and return */
FREE(msg, M_NETGRAPH);
return(error);
}
/*---------------------------------------------------------------------------*
* get data from another node and transmit it out on a B-channel
*---------------------------------------------------------------------------*/
#if defined(__FreeBSD_version) && __FreeBSD_version >= 500000
static int
ng_ing_rcvdata(hook_p hook, struct mbuf *m, meta_p meta,
struct mbuf **ret_m, meta_p *ret_meta)
#else
static int
ng_ing_rcvdata(hook_p hook, struct mbuf *m, meta_p meta)
#endif
{
struct ing_softc *sc = hook->node->private;
struct ifqueue *xmitq_p;
int s;
if(hook->private == NULL)
{
NG_FREE_DATA(m, meta);
return(ENETDOWN);
}
if(sc->sc_state == ST_IDLE || sc->sc_state == ST_DIALING)
{
i4b_l4_dialout(BDRV_ING, sc->sc_unit);
sc->sc_state = ST_DIALING;
}
sc->sc_outpkt++;
/*
* Now queue the data for when it can be sent
*/
if (meta && meta->priority > 0)
{
xmitq_p = (&sc->xmitq_hipri);
}
else
{
xmitq_p = (&sc->xmitq);
}
s = splimp();
if (IF_QFULL(xmitq_p))
{
IF_DROP(xmitq_p);
splx(s);
NG_FREE_DATA(m, meta);
return(ENOBUFS);
}
IF_ENQUEUE(xmitq_p, m);
ing_tx_queue_empty(sc->sc_unit);
splx(s);
return (0);
}
/*---------------------------------------------------------------------------*
* Do local shutdown processing..
* If we are a persistant device, we might refuse to go away, and
* we'd only remove our links and reset ourself.
*---------------------------------------------------------------------------*/
static int
ng_ing_rmnode(node_p node)
{
struct ing_softc *sc = node->private;
node->flags |= NG_INVALID;
ng_cutlinks(node);
sc->packets_in = 0; /* reset stats */
sc->packets_out = 0;
node->flags &= ~NG_INVALID; /* reset invalid flag */
return (0);
}
/*---------------------------------------------------------------------------*
* This is called once we've already connected a new hook to the other node.
*---------------------------------------------------------------------------*/
static int
ng_ing_connect(hook_p hook)
{
return (0);
}
/*
* Dook disconnection
*
* For this type, removal of the last link destroys the node
*/
static int
ng_ing_disconnect(hook_p hook)
{
struct ing_softc *sc = hook->node->private;
int s;
if(hook->private)
{
s = splimp();
splx(s);
}
else
{
sc->debughook = NULL;
}
return (0);
}
/*===========================================================================*/
#endif /* NI4BING > 0 */
|