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/*
* q_fifo.c FIFO.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <math.h>
#include "utils.h"
#include "tc_util.h"
int get_qdisc_handle(__u32 *h, char *str)
{
__u32 maj;
char *p;
maj = TC_H_UNSPEC;
if (strcmp(str, "none") == 0)
goto ok;
maj = strtoul(str, &p, 16);
if (p == str)
return -1;
maj <<= 16;
if (*p != ':' && *p!=0)
return -1;
ok:
*h = maj;
return 0;
}
int get_rate(unsigned *rate, char *str)
{
char *p;
double bps = strtod(str, &p);
if (p == str)
return -1;
if (*p) {
if (strcasecmp(p, "kbps") == 0)
bps *= 1024;
else if (strcasecmp(p, "mbps") == 0)
bps *= 1024*1024;
else if (strcasecmp(p, "mbit") == 0)
bps *= 1024*1024/8;
else if (strcasecmp(p, "kbit") == 0)
bps *= 1024/8;
else if (strcasecmp(p, "bps") != 0)
return -1;
} else
bps /= 8;
*rate = bps;
return 0;
}
int get_rate_and_cell(unsigned *rate, int *cell_log, char *str)
{
char * slash = strchr(str, '/');
if (slash)
*slash = 0;
if (get_rate(rate, str))
return -1;
if (slash) {
int cell;
int i;
if (scan_number(slash+1, &cell))
return -1;
*slash = '/';
for (i=0; i<32; i++) {
if ((1<<i) == cell) {
*cell_log = i;
return 0;
}
}
return -1;
}
return 0;
}
int print_rate(char *buf, int len, __u32 rate)
{
double tmp = (double)rate*8;
if (tmp >= 1024*1023 && fabs(1024*1024*rint(tmp/(1024*1024)) - tmp) < 1024)
snprintf(buf, len, "%gMbit", rint(tmp/(1024*1024)));
else if (tmp >= 1024-16 && fabs(1024*rint(tmp/1024) - tmp) < 16)
snprintf(buf, len, "%gKbit", rint(tmp/1024));
else
snprintf(buf, len, "%ubps", rate);
return 0;
}
char * sprint_rate(__u32 rate, char *buf)
{
if (print_rate(buf, SPRINT_BSIZE-1, rate))
strcpy(buf, "???");
return buf;
}
int get_usecs(unsigned *usecs, char *str)
{
double t;
char *p;
t = strtod(str, &p);
if (p == str)
return -1;
if (*p) {
if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 ||
strcasecmp(p, "secs"))
t *= 1000000;
else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 ||
strcasecmp(p, "msecs") == 0)
t *= 1000;
else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 ||
strcasecmp(p, "usecs") == 0)
t *= 1;
else
return -1;
}
*usecs = t;
return 0;
}
int print_usecs(char *buf, int len, __u32 usec)
{
double tmp = usec;
if (tmp >= 1000000)
snprintf(buf, len, "%.1fs", tmp/1000000);
else if (tmp >= 1000)
snprintf(buf, len, "%.1fms", tmp/1000);
else
snprintf(buf, len, "%uus", usec);
return 0;
}
char * sprint_usecs(__u32 usecs, char *buf)
{
if (print_usecs(buf, SPRINT_BSIZE-1, usecs))
strcpy(buf, "???");
return buf;
}
int get_size(unsigned *size, char *str)
{
double sz;
char *p;
sz = strtod(str, &p);
if (p == str)
return -1;
if (*p) {
if (strcasecmp(p, "kb") == 0 || strcasecmp(p, "k")==0)
sz *= 1024;
else if (strcasecmp(p, "mb") == 0 || strcasecmp(p, "m")==0)
sz *= 1024*1024;
else if (strcasecmp(p, "mbit") == 0)
sz *= 1024*1024/8;
else if (strcasecmp(p, "kbit") == 0)
sz *= 1024/8;
else if (strcasecmp(p, "b") != 0)
return -1;
}
*size = sz;
return 0;
}
int get_size_and_cell(unsigned *size, int *cell_log, char *str)
{
char * slash = strchr(str, '/');
if (slash)
*slash = 0;
if (get_size(size, str))
return -1;
if (slash) {
int cell;
int i;
if (scan_number(slash+1, &cell))
return -1;
*slash = '/';
for (i=0; i<32; i++) {
if ((1<<i) == cell) {
*cell_log = i;
return 0;
}
}
return -1;
}
return 0;
}
int print_size(char *buf, int len, __u32 sz)
{
double tmp = sz;
if (sz >= 1024*1024 && fabs(1024*1024*rint(tmp/(1024*1024)) - sz) < 1024)
snprintf(buf, len, "%gMb", rint(tmp/(1024*1024)));
else if (sz >= 1024 && fabs(1024*rint(tmp/1024) - sz) < 16)
snprintf(buf, len, "%gKb", rint(tmp/1024));
else
snprintf(buf, len, "%ub", sz);
return 0;
}
char * sprint_size(__u32 size, char *buf)
{
if (print_size(buf, SPRINT_BSIZE-1, size))
strcpy(buf, "???");
return buf;
}
int print_qdisc_handle(char *buf, int len, __u32 h)
{
snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16);
return 0;
}
char * sprint_qdisc_handle(__u32 h, char *buf)
{
if (print_qdisc_handle(buf, SPRINT_BSIZE-1, h))
strcpy(buf, "???");
return buf;
}
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