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Make get_rates be table based and go up to terrabits.

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(Logical change 1.65)
This commit is contained in:
osdl.net!shemminger 2004-08-13 23:23:46 +00:00
parent 0480c4c66c
commit 26ab0b103c
1 changed files with 43 additions and 32 deletions
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75
tc/tc_util.c
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@ -97,44 +97,55 @@ char * sprint_tc_classid(__u32 h, char *buf)
return buf;
}
/*
* NB: rates are scaled differently depending on bits or bytes.
* if bits are requested then k == 1000
* for bytes k = 1024
*/
/* See http://physics.nist.gov/cuu/Units/binary.html */
static const struct rate_suffix {
const char *name;
double scale;
} suffixes[] = {
{ "bit", 1. },
{ "Kibit", 1024. },
{ "kbit", 1000. },
{ "mibit", 1024.*1024. },
{ "mbit", 1000000. },
{ "gibit", 1024.*1024.*1024. },
{ "gbit", 1000000000. },
{ "tibit", 1024.*1024.*1024.*1024. },
{ "tbit", 1000000000000. },
{ "Bps", 8. },
{ "KiBps", 8.*1024. },
{ "KBps", 8000. },
{ "MiBps", 8.*1024*1024. },
{ "MBps", 8000000. },
{ "GiBps", 8.*1024.*1024.*1024. },
{ "GBps", 8000000000. },
{ "TiBps", 8.*1024.*1024.*1024.*1024. },
{ "TBps", 8000000000000. },
{ NULL }
};
int get_rate(unsigned *rate, const char *str)
{
char *p;
double bps = strtod(str, &p);
const struct rate_suffix *s;
if (p == str)
return -1;
if (*p == 0 || strcasecmp(p, "bit") == 0)
bps /= 8;
else if (strcasecmp(p, "kbit") == 0)
bps = (bps * 1000.) / 8;
else if (strcasecmp(p, "mbit") == 0)
bps = (bps * 1000000.)/8;
else if (strcasecmp(p, "gbit") == 0)
bps = (bps * 1000000000.)/8;
else if (strcasecmp(p, "kibit") == 0)
bps *= 1024 / 8;
else if (strcasecmp(p, "mibit") == 0)
bps *= 1024*1024/8;
else if (strcasecmp(p, "gibit") == 0)
bps *= 1024*1024*1024/8;
else if (strcasecmp(p, "kbps") == 0)
bps *= 1024;
else if (strcasecmp(p, "mbps") == 0)
bps *= 1024*1024;
else if (strcasecmp(p, "gbps") == 0)
bps *= 1024*1024*1024;
else if (strcasecmp(p, "bps") != 0)
return -1;
if (*p == '\0') {
*rate = bps / 8.; /* assume bytes/sec */
return 0;
}
*rate = bps;
return 0;
for (s = suffixes; s->name; ++s) {
if (strcasecmp(s->name, p) == 0) {
*rate = (bps * s->scale) / 8.;
return 0;
}
}
return -1;
}
int get_rate_and_cell(unsigned *rate, int *cell_log, char *str)
@ -174,11 +185,11 @@ void print_rate(char *buf, int len, __u32 rate)
if (use_iec) {
if (tmp >= 1024*1023 &&
fabs(1024*1024*rint(tmp/(1024*1024)) - tmp) < 1024)
snprintf(buf, len, "%gMibps", rint(tmp/(1024*1024)));
snprintf(buf, len, "%gMibit", rint(tmp/(1024*1024)));
else if (tmp >= 1024-16 && fabs(1024*rint(tmp/1024) - tmp) < 16)
snprintf(buf, len, "%gKibps", rint(tmp/1024));
snprintf(buf, len, "%gKibit", rint(tmp/1024));
else
snprintf(buf, len, "%ubps", rate);
snprintf(buf, len, "%ubit", rate);
} else {
if (tmp >= 999999 &&