2 * tc_util.c Misc TC utility functions.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
27 int get_qdisc_handle(__u32
*h
, const char *str
)
33 if (strcmp(str
, "none") == 0)
35 maj
= strtoul(str
, &p
, 16);
39 if (*p
!= ':' && *p
!=0)
46 int get_tc_classid(__u32
*h
, const char *str
)
52 if (strcmp(str
, "root") == 0)
55 if (strcmp(str
, "none") == 0)
57 maj
= strtoul(str
, &p
, 16);
68 min
= strtoul(str
, &p
, 16);
82 int print_tc_classid(char *buf
, int len
, __u32 h
)
86 else if (h
== TC_H_UNSPEC
)
87 snprintf(buf
, len
, "none");
88 else if (TC_H_MAJ(h
) == 0)
89 snprintf(buf
, len
, ":%x", TC_H_MIN(h
));
90 else if (TC_H_MIN(h
) == 0)
91 snprintf(buf
, len
, "%x:", TC_H_MAJ(h
)>>16);
93 snprintf(buf
, len
, "%x:%x", TC_H_MAJ(h
)>>16, TC_H_MIN(h
));
97 char * sprint_tc_classid(__u32 h
, char *buf
)
99 if (print_tc_classid(buf
, SPRINT_BSIZE
-1, h
))
104 /* See http://physics.nist.gov/cuu/Units/binary.html */
105 static const struct rate_suffix
{
112 { "mibit", 1024.*1024. },
113 { "mbit", 1000000. },
114 { "gibit", 1024.*1024.*1024. },
115 { "gbit", 1000000000. },
116 { "tibit", 1024.*1024.*1024.*1024. },
117 { "tbit", 1000000000000. },
119 { "KiBps", 8.*1024. },
121 { "MiBps", 8.*1024*1024. },
122 { "MBps", 8000000. },
123 { "GiBps", 8.*1024.*1024.*1024. },
124 { "GBps", 8000000000. },
125 { "TiBps", 8.*1024.*1024.*1024.*1024. },
126 { "TBps", 8000000000000. },
131 int get_rate(unsigned *rate
, const char *str
)
134 double bps
= strtod(str
, &p
);
135 const struct rate_suffix
*s
;
141 *rate
= bps
/ 8.; /* assume bytes/sec */
145 for (s
= suffixes
; s
->name
; ++s
) {
146 if (strcasecmp(s
->name
, p
) == 0) {
147 *rate
= (bps
* s
->scale
) / 8.;
155 int get_rate_and_cell(unsigned *rate
, int *cell_log
, char *str
)
157 char * slash
= strchr(str
, '/');
162 if (get_rate(rate
, str
))
169 if (get_integer(&cell
, slash
+1, 0))
173 for (i
=0; i
<32; i
++) {
174 if ((1<<i
) == cell
) {
184 void print_rate(char *buf
, int len
, __u32 rate
)
186 double tmp
= (double)rate
*8;
190 if (tmp
>= 1000.0*1024.0*1024.0)
191 snprintf(buf
, len
, "%.0fMibit", tmp
/1024.0*1024.0);
192 else if (tmp
>= 1000.0*1024)
193 snprintf(buf
, len
, "%.0fKibit", tmp
/1024);
195 snprintf(buf
, len
, "%.0fbit", tmp
);
197 if (tmp
>= 1000.0*1000000.0)
198 snprintf(buf
, len
, "%.0fMbit", tmp
/1000000.0);
199 else if (tmp
>= 1000.0 * 1000.0)
200 snprintf(buf
, len
, "%.0fKbit", tmp
/1000.0);
202 snprintf(buf
, len
, "%.0fbit", tmp
);
206 char * sprint_rate(__u32 rate
, char *buf
)
208 print_rate(buf
, SPRINT_BSIZE
-1, rate
);
212 int get_usecs(unsigned *usecs
, const char *str
)
222 if (strcasecmp(p
, "s") == 0 || strcasecmp(p
, "sec")==0 ||
223 strcasecmp(p
, "secs")==0)
225 else if (strcasecmp(p
, "ms") == 0 || strcasecmp(p
, "msec")==0 ||
226 strcasecmp(p
, "msecs") == 0)
228 else if (strcasecmp(p
, "us") == 0 || strcasecmp(p
, "usec")==0 ||
229 strcasecmp(p
, "usecs") == 0)
240 void print_usecs(char *buf
, int len
, __u32 usec
)
245 snprintf(buf
, len
, "%.1fs", tmp
/1000000);
246 else if (tmp
>= 1000)
247 snprintf(buf
, len
, "%.1fms", tmp
/1000);
249 snprintf(buf
, len
, "%uus", usec
);
252 char * sprint_usecs(__u32 usecs
, char *buf
)
254 print_usecs(buf
, SPRINT_BSIZE
-1, usecs
);
258 int get_size(unsigned *size
, const char *str
)
263 sz
= strtod(str
, &p
);
268 if (strcasecmp(p
, "kb") == 0 || strcasecmp(p
, "k")==0)
270 else if (strcasecmp(p
, "gb") == 0 || strcasecmp(p
, "g")==0)
271 sz
*= 1024*1024*1024;
272 else if (strcasecmp(p
, "gbit") == 0)
273 sz
*= 1024*1024*1024/8;
274 else if (strcasecmp(p
, "mb") == 0 || strcasecmp(p
, "m")==0)
276 else if (strcasecmp(p
, "mbit") == 0)
278 else if (strcasecmp(p
, "kbit") == 0)
280 else if (strcasecmp(p
, "b") != 0)
288 int get_size_and_cell(unsigned *size
, int *cell_log
, char *str
)
290 char * slash
= strchr(str
, '/');
295 if (get_size(size
, str
))
302 if (get_integer(&cell
, slash
+1, 0))
306 for (i
=0; i
<32; i
++) {
307 if ((1<<i
) == cell
) {
317 void print_size(char *buf
, int len
, __u32 sz
)
321 if (sz
>= 1024*1024 && fabs(1024*1024*rint(tmp
/(1024*1024)) - sz
) < 1024)
322 snprintf(buf
, len
, "%gMb", rint(tmp
/(1024*1024)));
323 else if (sz
>= 1024 && fabs(1024*rint(tmp
/1024) - sz
) < 16)
324 snprintf(buf
, len
, "%gKb", rint(tmp
/1024));
326 snprintf(buf
, len
, "%ub", sz
);
329 char * sprint_size(__u32 size
, char *buf
)
331 print_size(buf
, SPRINT_BSIZE
-1, size
);
335 static const double max_percent_value
= 0xffffffff;
337 int get_percent(__u32
*percent
, const char *str
)
340 double per
= strtod(str
, &p
) / 100.;
342 if (per
> 1. || per
< 0)
344 if (*p
&& strcmp(p
, "%"))
347 *percent
= (unsigned) rint(per
* max_percent_value
);
351 void print_percent(char *buf
, int len
, __u32 per
)
353 snprintf(buf
, len
, "%g%%", 100. * (double) per
/ max_percent_value
);
356 char * sprint_percent(__u32 per
, char *buf
)
358 print_percent(buf
, SPRINT_BSIZE
-1, per
);
362 void print_qdisc_handle(char *buf
, int len
, __u32 h
)
364 snprintf(buf
, len
, "%x:", TC_H_MAJ(h
)>>16);
367 char * sprint_qdisc_handle(__u32 h
, char *buf
)
369 print_qdisc_handle(buf
, SPRINT_BSIZE
-1, h
);
373 char * action_n2a(int action
, char *buf
, int len
)
385 case TC_ACT_RECLASSIFY
:
392 snprintf(buf
, len
, "%d", action
);
397 int action_a2n(char *arg
, int *result
)
401 if (matches(arg
, "continue") == 0)
403 else if (matches(arg
, "drop") == 0)
405 else if (matches(arg
, "shot") == 0)
407 else if (matches(arg
, "pass") == 0)
409 else if (strcmp(arg
, "ok") == 0)
411 else if (matches(arg
, "reclassify") == 0)
412 res
= TC_ACT_RECLASSIFY
;
415 if (sscanf(arg
, "%d%c", &res
, &dummy
) != 1)
422 void print_tm(FILE * f
, const struct tcf_t
*tm
)
424 int hz
= get_user_hz();
425 if (tm
->install
!= 0)
426 fprintf(f
, " installed %u sec", (unsigned)(tm
->install
/hz
));
427 if (tm
->lastuse
!= 0)
428 fprintf(f
, " used %u sec", (unsigned)(tm
->lastuse
/hz
));
429 if (tm
->expires
!= 0)
430 fprintf(f
, " expires %u sec", (unsigned)(tm
->expires
/hz
));
433 void print_tcstats2_attr(FILE *fp
, struct rtattr
*rta
, char *prefix
, struct rtattr
**xstats
)
436 struct rtattr
*tbs
[TCA_STATS_MAX
+ 1];
438 parse_rtattr_nested(tbs
, TCA_STATS_MAX
, rta
);
440 if (tbs
[TCA_STATS_BASIC
]) {
441 struct gnet_stats_basic bs
= {0};
442 memcpy(&bs
, RTA_DATA(tbs
[TCA_STATS_BASIC
]), MIN(RTA_PAYLOAD(tbs
[TCA_STATS_BASIC
]), sizeof(bs
)));
443 fprintf(fp
, "%sSent %llu bytes %u pkt",
444 prefix
, (unsigned long long) bs
.bytes
, bs
.packets
);
447 if (tbs
[TCA_STATS_QUEUE
]) {
448 struct gnet_stats_queue q
= {0};
449 memcpy(&q
, RTA_DATA(tbs
[TCA_STATS_QUEUE
]), MIN(RTA_PAYLOAD(tbs
[TCA_STATS_QUEUE
]), sizeof(q
)));
450 fprintf(fp
, " (dropped %u, overlimits %u requeues %u) ",
451 q
.drops
, q
.overlimits
, q
.requeues
);
454 if (tbs
[TCA_STATS_RATE_EST
]) {
455 struct gnet_stats_rate_est re
= {0};
456 memcpy(&re
, RTA_DATA(tbs
[TCA_STATS_RATE_EST
]), MIN(RTA_PAYLOAD(tbs
[TCA_STATS_RATE_EST
]), sizeof(re
)));
457 fprintf(fp
, "\n%srate %s %upps ",
458 prefix
, sprint_rate(re
.bps
, b1
), re
.pps
);
461 if (tbs
[TCA_STATS_QUEUE
]) {
462 struct gnet_stats_queue q
= {0};
463 memcpy(&q
, RTA_DATA(tbs
[TCA_STATS_QUEUE
]), MIN(RTA_PAYLOAD(tbs
[TCA_STATS_QUEUE
]), sizeof(q
)));
464 if (!tbs
[TCA_STATS_RATE_EST
])
465 fprintf(fp
, "\n%s", prefix
);
466 fprintf(fp
, "backlog %s %up requeues %u ",
467 sprint_size(q
.backlog
, b1
), q
.qlen
, q
.requeues
);
471 *xstats
= tbs
[TCA_STATS_APP
] ? : NULL
;
474 void print_tcstats_attr(FILE *fp
, struct rtattr
*tb
[], char *prefix
, struct rtattr
**xstats
)
478 if (tb
[TCA_STATS2
]) {
479 print_tcstats2_attr(fp
, tb
[TCA_STATS2
], prefix
, xstats
);
480 if (xstats
&& NULL
== *xstats
)
484 /* backward compatibility */
488 /* handle case where kernel returns more/less than we know about */
489 memset(&st
, 0, sizeof(st
));
490 memcpy(&st
, RTA_DATA(tb
[TCA_STATS
]), MIN(RTA_PAYLOAD(tb
[TCA_STATS
]), sizeof(st
)));
492 fprintf(fp
, "%sSent %llu bytes %u pkts (dropped %u, overlimits %u) ",
493 prefix
, (unsigned long long)st
.bytes
, st
.packets
, st
.drops
,
496 if (st
.bps
|| st
.pps
|| st
.qlen
|| st
.backlog
) {
497 fprintf(fp
, "\n%s", prefix
);
498 if (st
.bps
|| st
.pps
) {
499 fprintf(fp
, "rate ");
501 fprintf(fp
, "%s ", sprint_rate(st
.bps
, b1
));
503 fprintf(fp
, "%upps ", st
.pps
);
505 if (st
.qlen
|| st
.backlog
) {
506 fprintf(fp
, "backlog ");
508 fprintf(fp
, "%s ", sprint_size(st
.backlog
, b1
));
510 fprintf(fp
, "%up ", st
.qlen
);
516 if (tb
[TCA_XSTATS
] && xstats
)
517 *xstats
= tb
[TCA_XSTATS
];