summaryrefslogtreecommitdiff
path: root/accel-pppd/shaper/shaper.c
blob: 8ae2630a1009c5ac545487ab98f3ca91ae268f73 (plain)
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
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <netinet/in.h>
#include <linux/if.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <pthread.h>

#include "triton.h"
#include "events.h"
#include "log.h"
#include "ppp.h"
#include "cli.h"

#ifdef RADIUS
#include "radius.h"
#endif

#include "memdebug.h"

#include "shaper.h"
#include "tc_core.h"

#define ATTR_UP 1
#define ATTR_DOWN 2

static int conf_verbose = 0;
#ifdef RADIUS
static int conf_attr_down = 11; //Filter-Id
static int conf_attr_up = 11; //Filter-Id
static int conf_vendor = 0;
#endif
double conf_down_burst_factor = 0.1;
double conf_up_burst_factor = 1;
double conf_latency = 0.05;
int conf_mpu = 0;
int conf_quantum = 1500;
int conf_r2q = 10;
int conf_cburst = 1534;
int conf_ifb_ifindex;

int conf_up_limiter = LIM_POLICE;
int conf_down_limiter = LIM_TBF;

int conf_leaf_qdisc;
int conf_lq_arg1;
int conf_lq_arg2;
int conf_lq_arg3;

static int temp_down_speed;
static int temp_up_speed;

static pthread_rwlock_t shaper_lock = PTHREAD_RWLOCK_INITIALIZER;
static LIST_HEAD(shaper_list);

struct time_range_pd_t;
struct shaper_pd_t
{
	struct list_head entry;
	struct ppp_t *ppp;
	struct ppp_pd_t pd;
	int temp_down_speed;
	int temp_up_speed;
	int down_speed;
	int up_speed;
	struct list_head tr_list;
	struct time_range_pd_t *cur_tr;
};

struct time_range_pd_t
{
	struct list_head entry;
	int id;
	int down_speed;
	int down_burst;
	int up_speed;
	int up_burst;
};

struct time_range_t
{
	struct list_head entry;
	int id;
	struct triton_timer_t begin;
	struct triton_timer_t end;
};

static void *pd_key;

static LIST_HEAD(time_range_list);
static int time_range_id = 0;

static void shaper_ctx_close(struct triton_context_t *);
static struct triton_context_t shaper_ctx = {
	.close = shaper_ctx_close,
	.before_switch = log_switch,
};

static struct shaper_pd_t *find_pd(struct ppp_t *ppp, int create)
{
	struct ppp_pd_t *pd;
	struct shaper_pd_t *spd;

	list_for_each_entry(pd, &ppp->pd_list, entry) {
		if (pd->key == &pd_key) {
			spd = container_of(pd, typeof(*spd), pd);
			return spd;
		}
	}

	if (create) {
		spd = _malloc(sizeof(*spd));
		if (!spd) {
			log_emerg("shaper: out of memory\n");
			return NULL;
		}

		memset(spd, 0, sizeof(*spd));
		spd->ppp = ppp;
		list_add_tail(&spd->pd.entry, &ppp->pd_list);
		spd->pd.key = &pd_key;
		INIT_LIST_HEAD(&spd->tr_list);

		pthread_rwlock_wrlock(&shaper_lock);
		list_add_tail(&spd->entry, &shaper_list);
		pthread_rwlock_unlock(&shaper_lock);
		return spd;
	}

	return NULL;
}

static void parse_string(const char *str, int dir, int *speed, int *burst, int *tr_id)
{
	char *endptr;
	long int val;
	unsigned int n1, n2, n3;

	if (strstr(str, "lcp:interface-config#1=rate-limit output access-group") == str) {
		if (dir == ATTR_DOWN) {
			val = sscanf(str, "lcp:interface-config#1=rate-limit output access-group %i %u %u %u conform-action transmit exceed-action drop", tr_id, &n1, &n2, &n3);
			if (val == 4) {
				*speed = n1/1000;
				*burst = n2;
			}
		}
		return;
	} else if (strstr(str, "lcp:interface-config#1=rate-limit input access-group") == str) {
		if (dir == ATTR_UP) {
			val = sscanf(str, "lcp:interface-config#1=rate-limit input access-group %i %u %u %u conform-action transmit exceed-action drop", tr_id, &n1, &n2, &n3);
			if (val == 4) {
				*speed = n1/1000;
				*burst = n2;
			}
		}
		return;
	}	else if (strstr(str, "lcp:interface-config#1=rate-limit output") == str) {
		if (dir == ATTR_DOWN) {
			val = sscanf(str, "lcp:interface-config#1=rate-limit output %u %u %u conform-action transmit exceed-action drop", &n1, &n2, &n3);
			if (val == 3) {
				*speed = n1/1000;
				*burst = n2;
			}
		}
		return;
	}	else if (strstr(str, "lcp:interface-config#1=rate-limit input") == str) {
		if (dir == ATTR_UP) {
			val = sscanf(str, "lcp:interface-config#1=rate-limit input %u %u %u conform-action transmit exceed-action drop", &n1, &n2, &n3);
			if (val == 3) {
				*speed = n1/1000;
				*burst = n2;
			}
		}
		return;
	}

	val = strtol(str, &endptr, 10);
	if (*endptr == 0) {
		*speed = val;
		return;
	}
	if (*endptr == ',') {
		*tr_id = val;
		val = strtol(endptr + 1, &endptr, 10);
	}
	if (*endptr == 0) {
		*speed = val;
		return;
	} else {
		if (*endptr == '/' || *endptr == '\\' || *endptr == ':') {
			if (dir == ATTR_DOWN)
				*speed = val;
			else
				*speed = strtol(endptr + 1, &endptr, 10);
		}
	}
}

static struct time_range_pd_t *get_tr_pd(struct shaper_pd_t *pd, int id)
{
	struct time_range_pd_t *tr_pd;
	
	list_for_each_entry(tr_pd, &pd->tr_list, entry) {
		if (tr_pd->id == id)
			return tr_pd;
	}

	tr_pd = _malloc(sizeof(*tr_pd));
	memset(tr_pd, 0, sizeof(*tr_pd));
	tr_pd->id = id;

	if (id == time_range_id || id == 0)
		pd->cur_tr = tr_pd;
	
	list_add_tail(&tr_pd->entry, &pd->tr_list);

	return tr_pd;
}

static void clear_tr_pd(struct shaper_pd_t *pd)
{
	struct time_range_pd_t *tr_pd;

	while (!list_empty(&pd->tr_list)) {
		tr_pd = list_entry(pd->tr_list.next, typeof(*tr_pd), entry);
		list_del(&tr_pd->entry);
		_free(tr_pd);
	}
}

#ifdef RADIUS
static void parse_attr(struct rad_attr_t *attr, int dir, int *speed, int *burst, int *tr_id)
{
	if (attr->attr->type == ATTR_TYPE_STRING)
		parse_string(attr->val.string, dir, speed, burst, tr_id);
	else if (attr->attr->type == ATTR_TYPE_INTEGER)
		*speed = attr->val.integer;
}

static void check_radius_attrs(struct shaper_pd_t *pd, struct rad_packet_t *pack)
{
	struct rad_attr_t *attr;
	int down_speed, down_burst;
	int up_speed, up_burst;
	int tr_id;
	struct time_range_pd_t *tr_pd;

	list_for_each_entry(attr, &pack->attrs, entry) {
		if (attr->vendor && attr->vendor->id != conf_vendor)
			continue;
		if (!attr->vendor && conf_vendor)
			continue;
		if (attr->attr->id != conf_attr_down && attr->attr->id != conf_attr_up)
			continue;
		tr_id = 0;
		down_speed = 0;
		down_burst = 0;
		up_speed = 0;
		up_burst = 0;
		if (attr->attr->id == conf_attr_down)
			parse_attr(attr, ATTR_DOWN, &down_speed, &down_burst, &tr_id);
		if (attr->attr->id == conf_attr_up)
			parse_attr(attr, ATTR_UP, &up_speed, &up_burst, &tr_id);
		tr_pd = get_tr_pd(pd, tr_id);
		if (down_speed)
			tr_pd->down_speed = down_speed;
		if (down_burst)
			tr_pd->down_burst = down_burst;
		if (up_speed)
			tr_pd->up_speed = up_speed;
		if (up_burst)
			tr_pd->up_burst = up_burst;
	}
}

static void ev_radius_access_accept(struct ev_radius_t *ev)
{
	int down_speed, down_burst;
	int up_speed, up_burst;
	struct shaper_pd_t *pd = find_pd(ev->ppp, 1);

	if (!pd)
		return;

	check_radius_attrs(pd, ev->reply);

	if (temp_down_speed || temp_up_speed) {
		pd->temp_down_speed = temp_down_speed;
		pd->temp_up_speed = temp_up_speed;
		pd->down_speed = temp_down_speed;
		pd->up_speed = temp_up_speed;
		down_speed = temp_down_speed;
		up_speed = temp_up_speed;
		down_burst = 0;
		up_burst = 0;
	} else {
		if (!pd->cur_tr)
			return;
		pd->down_speed = pd->cur_tr->down_speed;
		pd->up_speed = pd->cur_tr->up_speed;
		down_speed = pd->cur_tr->down_speed;
		up_speed = pd->cur_tr->up_speed;
		down_burst = pd->cur_tr->down_burst;
		up_burst = pd->cur_tr->up_burst;
	}

	if (down_speed > 0 && up_speed > 0) {
		if (!install_limiter(ev->ppp, down_speed, down_burst, up_speed, up_burst)) {
			if (conf_verbose)
				log_ppp_info2("shaper: installed shaper %i/%i (Kbit)\n", down_speed, up_speed);
		}
	}
}

static void ev_radius_coa(struct ev_radius_t *ev)
{
	struct shaper_pd_t *pd = find_pd(ev->ppp, 0);

	if (!pd) {
		ev->res = -1;
		return;
	}
	
	clear_tr_pd(pd);
	check_radius_attrs(pd, ev->request);
		
	if (pd->temp_down_speed || pd->temp_up_speed)
		return;
	
	if (!pd->cur_tr) {
		if (pd->down_speed || pd->up_speed) {
			pd->down_speed = 0;
			pd->up_speed = 0;
			if (conf_verbose)
				log_ppp_info2("shaper: removed shaper\n");
			remove_limiter(ev->ppp);
		}
		return;
	}

	if (pd->down_speed != pd->cur_tr->down_speed || pd->up_speed != pd->cur_tr->up_speed) {
		pd->down_speed = pd->cur_tr->down_speed;
		pd->up_speed = pd->cur_tr->up_speed;

		if (remove_limiter(ev->ppp)) {
			ev->res = -1;
			return;
		}
		
		if (pd->down_speed > 0 || pd->up_speed > 0) {
			if (install_limiter(ev->ppp, pd->cur_tr->down_speed, pd->cur_tr->down_burst, pd->cur_tr->up_speed, pd->cur_tr->up_burst)) {
				ev->res= -1;
				return;
			} else {
				if (conf_verbose)
					log_ppp_info2("shaper: changed shaper %i/%i (Kbit)\n", pd->down_speed, pd->up_speed);
			}
		} else {
			if (conf_verbose)
				log_ppp_info2("shaper: removed shaper\n");
		}
	}
}
#endif

static void ev_shaper(struct ev_shaper_t *ev)
{
	struct shaper_pd_t *pd = find_pd(ev->ppp, 1);
	int down_speed = 0, down_burst = 0;
	int up_speed = 0, up_burst = 0;
	int tr_id = 0;
	struct time_range_pd_t *tr_pd;

	if (!pd)
		return;

	parse_string(ev->val, ATTR_DOWN, &down_speed, &down_burst, &tr_id);
	parse_string(ev->val, ATTR_UP, &up_speed, &up_burst, &tr_id);

	tr_pd = get_tr_pd(pd, tr_id);
	tr_pd->down_speed = down_speed;
	tr_pd->down_burst = down_burst;
	tr_pd->up_speed = up_speed;
	tr_pd->up_burst = up_burst;

	if (temp_down_speed || temp_up_speed) {
		pd->temp_down_speed = temp_down_speed;
		pd->temp_up_speed = temp_up_speed;
		pd->down_speed = temp_down_speed;
		pd->up_speed = temp_up_speed;
		down_speed = temp_down_speed;
		up_speed = temp_up_speed;
		down_burst = 0;
		up_burst = 0;
	} else {
		if (!pd->cur_tr)
			return;
		pd->down_speed = down_speed;
		pd->up_speed = up_speed;
	}

	if (pd->down_speed > 0 && pd->up_speed > 0) {
		if (!install_limiter(ev->ppp, down_speed, down_burst, up_speed, up_burst)) {
			if (conf_verbose)
				log_ppp_info2("shaper: installed shaper %i/%i (Kbit)\n", down_speed, up_speed);
		}
	}
}

static void ev_ppp_pre_up(struct ppp_t *ppp)
{
	struct shaper_pd_t *pd = find_pd(ppp, 1);
	if (!pd)
		return;
	
	if (temp_down_speed || temp_up_speed) {
		pd->temp_down_speed = temp_down_speed;
		pd->temp_up_speed = temp_up_speed;
		pd->down_speed = temp_down_speed;
		pd->up_speed = temp_up_speed;
		if (!install_limiter(ppp, temp_down_speed, 0, temp_up_speed, 0)) {
			if (conf_verbose)
				log_ppp_info2("shaper: installed shaper %i/%i (Kbit)\n", temp_down_speed, temp_up_speed);
		}
	}
}

static void ev_ppp_finishing(struct ppp_t *ppp)
{
	struct shaper_pd_t *pd = find_pd(ppp, 0);

	if (pd) {
		clear_tr_pd(pd);
		pthread_rwlock_wrlock(&shaper_lock);
		list_del(&pd->entry);
		pthread_rwlock_unlock(&shaper_lock);
		list_del(&pd->pd.entry);

		if (pd->down_speed || pd->up_speed)
			remove_limiter(ppp);

		_free(pd);
	}
}

static void shaper_change_help(char * const *f, int f_cnt, void *cli)
{
	cli_send(cli, "shaper change <interface> <value> [temp] - change shaper on specified interface, if temp is set then previous settings may be restored later by 'shaper restore'\r\n");
	cli_send(cli, "shaper change all <value> [temp] - change shaper on all interfaces, if temp is set also new interfaces will have specified shaper value\r\n");
}

static void shaper_change(struct shaper_pd_t *pd)
{
	if (pd->down_speed || pd->up_speed)
		remove_limiter(pd->ppp);

	if (pd->temp_down_speed || pd->temp_up_speed) {
		pd->down_speed = pd->temp_down_speed;
		pd->up_speed = pd->temp_up_speed;
		install_limiter(pd->ppp, pd->temp_down_speed, 0, pd->temp_up_speed, 0);
	} else if (pd->cur_tr->down_speed || pd->cur_tr->up_speed) {
		pd->down_speed = pd->cur_tr->down_speed;
		pd->up_speed = pd->cur_tr->up_speed;
		install_limiter(pd->ppp, pd->cur_tr->down_speed, pd->cur_tr->down_burst, pd->cur_tr->up_speed, pd->cur_tr->up_burst);
	} else {
		pd->down_speed = 0;
		pd->up_speed = 0;
	}
}

static int shaper_change_exec(const char *cmd, char * const *f, int f_cnt, void *cli)
{
	struct shaper_pd_t *pd;
	int down_speed = 0, up_speed = 0, down_burst = 0, up_burst = 0;
	int all = 0, temp = 0, found = 0;
	int tr_id;

	if (f_cnt < 4)
		return CLI_CMD_SYNTAX;

	parse_string(f[3], ATTR_DOWN, &down_speed, &down_burst, &tr_id);
	parse_string(f[3], ATTR_UP, &up_speed, &up_burst, &tr_id);

	//if (down_speed == 0 || up_speed == 0)
	//	return CLI_CMD_INVAL;
	
	if (!strcmp(f[2], "all"))
		all = 1;
	
	if (f_cnt == 5) {
		if (strcmp(f[4], "temp"))
			return CLI_CMD_SYNTAX;
		else
			temp = 1;
	}

	if (all && temp) {
		temp_down_speed = down_speed;
		temp_up_speed = up_speed;
	}

	pthread_rwlock_rdlock(&shaper_lock);
	list_for_each_entry(pd, &shaper_list, entry) {
		if (all || !strcmp(f[2], pd->ppp->ifname)) {
			if (temp) {
				pd->temp_down_speed = down_speed;
				pd->temp_up_speed = up_speed;
			} else {
				pd->temp_down_speed = 0;
				pd->temp_up_speed = 0;
				if (!pd->cur_tr)
					pd->cur_tr = get_tr_pd(pd, 0);
				pd->cur_tr->down_speed = down_speed;
				pd->cur_tr->down_burst = down_burst;
				pd->cur_tr->up_speed = up_speed;
				pd->cur_tr->up_burst = up_burst;
			}
			triton_context_call(pd->ppp->ctrl->ctx, (triton_event_func)shaper_change, pd);
			if (!all) {
				found = 1;
				break;
			}
		}
	}
	pthread_rwlock_unlock(&shaper_lock);

	if (!all && !found)
		cli_send(cli, "not found\r\n");

	return CLI_CMD_OK;
}

static void shaper_restore_help(char * const *f, int f_cnt, void *cli)
{
	cli_send(cli, "shaper restore <interface> - restores shaper settings on specified interface made by 'shaper change' command with 'temp' flag\r\n");
	cli_send(cli, "shaper restore all - restores shaper settings on all interfaces made by 'shaper change' command with 'temp' flag\r\n");
}

static void shaper_restore(struct shaper_pd_t *pd)
{
	remove_limiter(pd->ppp);

	if (pd->cur_tr) {
		pd->down_speed = pd->cur_tr->down_speed;
		pd->up_speed = pd->cur_tr->up_speed;
		install_limiter(pd->ppp, pd->cur_tr->down_speed, pd->cur_tr->down_burst, pd->cur_tr->up_speed, pd->cur_tr->up_burst);
	} else {
		pd->down_speed = 0;
		pd->up_speed = 0;
	}
}

static int shaper_restore_exec(const char *cmd, char * const *f, int f_cnt, void *cli)
{
	struct shaper_pd_t *pd;
	int all, found = 0;;
	int *ptr = 0;

	*ptr = 1;

	if (f_cnt != 3)
		return CLI_CMD_SYNTAX;
	
	if (strcmp(f[2], "all"))
		all = 0;
	else
		all = 1;
	
	pthread_rwlock_rdlock(&shaper_lock);
	if (all) {
		temp_down_speed = 0;
		temp_up_speed = 0;
	}
	list_for_each_entry(pd, &shaper_list, entry) {
		if (!pd->temp_down_speed)
			continue;
		if (all || !strcmp(f[2], pd->ppp->ifname)) {
			pd->temp_down_speed = 0;
			pd->temp_up_speed = 0;
			triton_context_call(pd->ppp->ctrl->ctx, (triton_event_func)shaper_restore, pd);
			if (!all) {
				found = 1;
				break;
			}
		}
	}
	pthread_rwlock_unlock(&shaper_lock);

	if (!all && !found)
		cli_send(cli, "not found\r\n");
	
	return CLI_CMD_OK;
}

static void print_rate(const struct ppp_t *ppp, char *buf)
{
	struct shaper_pd_t *pd = find_pd((struct ppp_t *)ppp, 0);

	if (pd && (pd->down_speed || pd->up_speed))
		sprintf(buf, "%i/%i", pd->down_speed, pd->up_speed);
	else
		*buf = 0;
}

static void shaper_ctx_close(struct triton_context_t *ctx)
{
	struct time_range_t *r;

	while (!list_empty(&time_range_list)) {
		r = list_entry(time_range_list.next, typeof(*r), entry);
		list_del(&r->entry);
		if (r->begin.tpd)
			triton_timer_del(&r->begin);
		if (r->end.tpd)
			triton_timer_del(&r->end);
		_free(r);
	}

	triton_context_unregister(ctx);
}

static void update_shaper_tr(struct shaper_pd_t *pd)
{
	struct time_range_pd_t *tr;

	if (pd->ppp->terminating)
		return;

	list_for_each_entry(tr, &pd->tr_list, entry) {
		if (tr->id != time_range_id)
			continue;
		pd->cur_tr = tr;
		break;
	}

	if (pd->temp_down_speed || pd->temp_up_speed)
		return;

	if (pd->down_speed || pd->up_speed) {
		if (pd->cur_tr && pd->down_speed == pd->cur_tr->down_speed && pd->up_speed == pd->cur_tr->up_speed)
			return;
		remove_limiter(pd->ppp);
	}
	
	if (pd->cur_tr && (pd->cur_tr->down_speed || pd->cur_tr->up_speed)) {
		pd->down_speed = pd->cur_tr->down_speed;
		pd->up_speed = pd->cur_tr->up_speed;
		if (!install_limiter(pd->ppp, pd->cur_tr->down_speed, pd->cur_tr->down_burst, pd->cur_tr->up_speed, pd->cur_tr->up_burst)) {
			if (conf_verbose)
				log_ppp_info2("shaper: changed shaper %i/%i (Kbit)\n", pd->cur_tr->down_speed, pd->cur_tr->up_speed);
		}
	} else
		if (conf_verbose)
			log_ppp_info2("shaper: removed shaper\n");	
}

static void time_range_begin_timer(struct triton_timer_t *t)
{
	struct time_range_t *tr = container_of(t, typeof(*tr), begin);
	struct shaper_pd_t *pd;

	time_range_id = tr->id;

	log_debug("shaper: time_range_begin_timer: id=%i\n", time_range_id);

	pthread_rwlock_rdlock(&shaper_lock);
	list_for_each_entry(pd, &shaper_list, entry)
		triton_context_call(pd->ppp->ctrl->ctx, (triton_event_func)update_shaper_tr, pd);
	pthread_rwlock_unlock(&shaper_lock);
}

static void time_range_end_timer(struct triton_timer_t *t)
{
	struct shaper_pd_t *pd;

	time_range_id = 0;
	
	log_debug("shaper: time_range_end_timer\n");

	pthread_rwlock_rdlock(&shaper_lock);
	list_for_each_entry(pd, &shaper_list, entry)
		triton_context_call(pd->ppp->ctrl->ctx, (triton_event_func)update_shaper_tr, pd);
	pthread_rwlock_unlock(&shaper_lock);
}

static struct time_range_t *parse_range(const char *val)
{
	char *endptr;
	int id;
	time_t t;
	struct tm begin_tm, end_tm;
	struct time_range_t *r;

	id = strtol(val, &endptr, 10);
	if (*endptr != ',')
		return NULL;
	if (id <= 0)
		return NULL;
	
	time(&t);
	localtime_r(&t, &begin_tm);
	begin_tm.tm_sec = 1;
	end_tm = begin_tm;
	end_tm.tm_sec = 0;

	endptr = strptime(endptr + 1, "%H:%M", &begin_tm);
	if (*endptr != '-')
		return NULL;
	
	endptr = strptime(endptr + 1, "%H:%M", &end_tm);
	if (*endptr)
		return NULL;
	
	r = _malloc(sizeof(*r));
	memset(r, 0, sizeof(*r));

	r->id = id;
	r->begin.expire_tv.tv_sec = mktime(&begin_tm);
	r->begin.period = 24 * 60 * 60 * 1000;
	r->begin.expire = time_range_begin_timer;
	r->end.expire_tv.tv_sec = mktime(&end_tm);
	r->end.period = 24 * 60 * 60 * 1000;
	r->end.expire = time_range_end_timer;

	return r;
}

static void load_time_ranges(void)
{
	struct conf_sect_t *s = conf_get_section("shaper");
	struct conf_option_t *opt;
	struct time_range_t *r;
	time_t ts;

	if (!s)
		return;
	
	time(&ts);

	while (!list_empty(&time_range_list)) {
		r = list_entry(time_range_list.next, typeof(*r), entry);
		list_del(&r->entry);
		if (r->begin.tpd)
			triton_timer_del(&r->begin);
		if (r->end.tpd)
			triton_timer_del(&r->end);
		_free(r);
	}

	list_for_each_entry(opt, &s->items, entry) {
		if (strcmp(opt->name, "time-range"))
			continue;
		r = parse_range(opt->val);
		if (r) {
			list_add_tail(&r->entry, &time_range_list);
			if (r->begin.expire_tv.tv_sec > r->end.expire_tv.tv_sec) {
				if (ts >= r->begin.expire_tv.tv_sec || ts <= r->end.expire_tv.tv_sec)
					time_range_begin_timer(&r->begin);
			} else {
				if (ts >= r->begin.expire_tv.tv_sec && ts <= r->end.expire_tv.tv_sec)
					time_range_begin_timer(&r->begin);
			}
			if (r->begin.expire_tv.tv_sec < ts)
				r->begin.expire_tv.tv_sec += 24 * 60 * 60;
			if (r->end.expire_tv.tv_sec < ts)
				r->end.expire_tv.tv_sec += 24 * 60 * 60;
			triton_timer_add(&shaper_ctx, &r->begin, 1);
			triton_timer_add(&shaper_ctx, &r->end, 1);
		} else
			log_emerg("shaper: failed to parse time-range '%s'\n", opt->val);
	}
}

#ifdef RADIUS
static int parse_attr_opt(const char *opt)
{
	struct rad_dict_attr_t *attr;
	struct rad_dict_vendor_t *vendor;

	if (conf_vendor)
		vendor = rad_dict_find_vendor_id(conf_vendor);
	else
		vendor = NULL;

	if (conf_vendor) {
		if (vendor)
			attr = rad_dict_find_vendor_attr(vendor, opt);
		else
			attr = NULL;
	}else
		attr = rad_dict_find_attr(opt);

	if (attr)
		return attr->id;

	return atoi(opt);
}

static int parse_vendor_opt(const char *opt)
{
	struct rad_dict_vendor_t *vendor;

	vendor = rad_dict_find_vendor_name(opt);
	if (vendor)
		return vendor->id;
	
	return atoi(opt);
}
#endif

static void load_config(void)
{
	const char *opt;

#ifdef RADIUS
	if (triton_module_loaded("radius")) {
		opt = conf_get_opt("shaper", "vendor");
		if (opt)
			conf_vendor = parse_vendor_opt(opt);

		opt = conf_get_opt("shaper", "attr");
		if (opt) {
			conf_attr_down = parse_attr_opt(opt);
			conf_attr_up = parse_attr_opt(opt);
		}

		opt = conf_get_opt("shaper", "attr-down");
		if (opt)
			conf_attr_down = parse_attr_opt(opt);
		
		opt = conf_get_opt("shaper", "attr-up");
		if (opt)
			conf_attr_up = parse_attr_opt(opt);

		if (conf_attr_up <= 0 || conf_attr_down <= 0) {
			log_emerg("shaper: incorrect attribute(s), tbf disabled...\n");
			return;
		}
	}
#endif
	
	opt = conf_get_opt("shaper", "burst-factor");
	if (opt) {
		conf_down_burst_factor = strtod(opt, NULL);
		conf_up_burst_factor = conf_down_burst_factor * 10;
	}
	
	opt = conf_get_opt("shaper", "down-burst-factor");
	if (opt)
		conf_down_burst_factor = strtod(opt, NULL);

	opt = conf_get_opt("shaper", "up-burst-factor");
	if (opt)
		conf_up_burst_factor = strtod(opt, NULL);

	opt = conf_get_opt("shaper", "latency");
	if (opt && atoi(opt) > 0)
		conf_latency = (double)atoi(opt) / 1000;

	opt = conf_get_opt("shaper", "mpu");
	if (opt && atoi(opt) >= 0)
		conf_mpu = atoi(opt);

	opt = conf_get_opt("shaper", "r2q");
	if (opt && atoi(opt) >= 0)
		conf_r2q = atoi(opt);

	opt = conf_get_opt("shaper", "quantum");
	if (opt && atoi(opt) >= 0)
		conf_quantum = atoi(opt);
	
	opt = conf_get_opt("shaper", "cburst");
	if (opt && atoi(opt) >= 0)
		conf_cburst = atoi(opt);

	opt = conf_get_opt("shaper", "up-limiter");
	if (opt) {
		if (!strcmp(opt, "police"))
			conf_up_limiter = LIM_POLICE;
		else if (!strcmp(opt, "htb"))
			conf_up_limiter = LIM_HTB;
		else
			log_error("shaper: unknown upstream limiter '%s'\n", opt);
	}

	opt = conf_get_opt("shaper", "down-limiter");
	if (opt) {
		if (!strcmp(opt, "tbf"))
			conf_down_limiter = LIM_TBF;
		else if (!strcmp(opt, "htb"))
			conf_down_limiter = LIM_HTB;
		else
			log_error("shaper: unknown downstream limiter '%s'\n", opt);
	}

	if (conf_up_limiter == LIM_HTB && !conf_ifb_ifindex) {
		log_warn("shaper: requested 'htb' upstream limiter, but no 'ifb' specified, falling back to police...\n");
		conf_up_limiter = LIM_POLICE;
	}

	opt = conf_get_opt("shaper", "leaf-qdisc");
	if (opt)
		leaf_qdisc_parse(opt);
	else
		conf_leaf_qdisc = 0;


	opt = conf_get_opt("shaper", "verbose");
	if (opt && atoi(opt) > 0)
		conf_verbose = 1;
	
	triton_context_call(&shaper_ctx, (triton_event_func)load_time_ranges, NULL);
}

static void init(void)
{
	const char *opt;

	tc_core_init();

	opt = conf_get_opt("shaper", "ifb");
	if (opt && init_ifb(opt))
		_exit(0);

	triton_context_register(&shaper_ctx, NULL);
	triton_context_wakeup(&shaper_ctx);

	load_config();

#ifdef RADIUS
	if (triton_module_loaded("radius")) {
		triton_event_register_handler(EV_RADIUS_ACCESS_ACCEPT, (triton_event_func)ev_radius_access_accept);
		triton_event_register_handler(EV_RADIUS_COA, (triton_event_func)ev_radius_coa);
	}
#endif
	triton_event_register_handler(EV_PPP_PRE_UP, (triton_event_func)ev_ppp_pre_up);
	triton_event_register_handler(EV_PPP_FINISHING, (triton_event_func)ev_ppp_finishing);
	//triton_event_register_handler(EV_CTRL_FINISHED, (triton_event_func)ev_ctrl_finished);
	triton_event_register_handler(EV_SHAPER, (triton_event_func)ev_shaper);
	triton_event_register_handler(EV_CONFIG_RELOAD, (triton_event_func)load_config);

	cli_register_simple_cmd2(shaper_change_exec, shaper_change_help, 2, "shaper", "change");
	cli_register_simple_cmd2(shaper_restore_exec, shaper_restore_help, 2, "shaper", "restore");
	cli_show_ses_register("rate-limit", "rate limit down-stream/up-stream (Kbit)", print_rate);
}

DEFINE_INIT(100, init);