mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-16 22:45:17 +08:00
516 lines
11 KiB
C
516 lines
11 KiB
C
/*
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* tc_util.c Misc TC utility functions.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <string.h>
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#include <math.h>
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#include "utils.h"
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#include "tc_util.h"
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int get_qdisc_handle(__u32 *h, const char *str)
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{
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__u32 maj;
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char *p;
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maj = TC_H_UNSPEC;
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if (strcmp(str, "none") == 0)
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goto ok;
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maj = strtoul(str, &p, 16);
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if (p == str)
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return -1;
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maj <<= 16;
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if (*p != ':' && *p!=0)
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return -1;
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ok:
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*h = maj;
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return 0;
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}
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int get_tc_classid(__u32 *h, const char *str)
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{
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__u32 maj, min;
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char *p;
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maj = TC_H_ROOT;
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if (strcmp(str, "root") == 0)
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goto ok;
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maj = TC_H_UNSPEC;
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if (strcmp(str, "none") == 0)
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goto ok;
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maj = strtoul(str, &p, 16);
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if (p == str) {
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maj = 0;
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if (*p != ':')
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return -1;
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}
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if (*p == ':') {
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maj <<= 16;
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str = p+1;
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min = strtoul(str, &p, 16);
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if (*p != 0)
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return -1;
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maj |= min;
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} else if (*p != 0)
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return -1;
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ok:
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*h = maj;
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return 0;
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}
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int print_tc_classid(char *buf, int len, __u32 h)
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{
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if (h == TC_H_ROOT)
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sprintf(buf, "root");
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else if (h == TC_H_UNSPEC)
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snprintf(buf, len, "none");
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else if (TC_H_MAJ(h) == 0)
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snprintf(buf, len, ":%x", TC_H_MIN(h));
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else if (TC_H_MIN(h) == 0)
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snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16);
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else
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snprintf(buf, len, "%x:%x", TC_H_MAJ(h)>>16, TC_H_MIN(h));
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return 0;
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}
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char * sprint_tc_classid(__u32 h, char *buf)
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{
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if (print_tc_classid(buf, SPRINT_BSIZE-1, h))
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strcpy(buf, "???");
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return buf;
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}
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/* See http://physics.nist.gov/cuu/Units/binary.html */
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static const struct rate_suffix {
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const char *name;
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double scale;
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} suffixes[] = {
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{ "bit", 1. },
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{ "Kibit", 1024. },
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{ "kbit", 1000. },
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{ "mibit", 1024.*1024. },
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{ "mbit", 1000000. },
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{ "gibit", 1024.*1024.*1024. },
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{ "gbit", 1000000000. },
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{ "tibit", 1024.*1024.*1024.*1024. },
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{ "tbit", 1000000000000. },
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{ "Bps", 8. },
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{ "KiBps", 8.*1024. },
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{ "KBps", 8000. },
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{ "MiBps", 8.*1024*1024. },
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{ "MBps", 8000000. },
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{ "GiBps", 8.*1024.*1024.*1024. },
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{ "GBps", 8000000000. },
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{ "TiBps", 8.*1024.*1024.*1024.*1024. },
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{ "TBps", 8000000000000. },
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{ NULL }
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};
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int get_rate(unsigned *rate, const char *str)
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{
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char *p;
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double bps = strtod(str, &p);
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const struct rate_suffix *s;
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if (p == str)
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return -1;
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if (*p == '\0') {
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*rate = bps / 8.; /* assume bytes/sec */
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return 0;
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}
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for (s = suffixes; s->name; ++s) {
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if (strcasecmp(s->name, p) == 0) {
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*rate = (bps * s->scale) / 8.;
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return 0;
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}
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}
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return -1;
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}
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int get_rate_and_cell(unsigned *rate, int *cell_log, char *str)
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{
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char * slash = strchr(str, '/');
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if (slash)
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*slash = 0;
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if (get_rate(rate, str))
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return -1;
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if (slash) {
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int cell;
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int i;
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if (get_integer(&cell, slash+1, 0))
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return -1;
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*slash = '/';
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for (i=0; i<32; i++) {
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if ((1<<i) == cell) {
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*cell_log = i;
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return 0;
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}
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}
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return -1;
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}
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return 0;
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}
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void print_rate(char *buf, int len, __u32 rate)
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{
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double tmp = (double)rate*8;
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extern int use_iec;
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if (use_iec) {
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if (tmp >= 1000.0*1024.0*1024.0)
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snprintf(buf, len, "%.0fMibit", tmp/1024.0*1024.0);
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else if (tmp >= 1000.0*1024)
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snprintf(buf, len, "%.0fKibit", tmp/1024);
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else
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snprintf(buf, len, "%.0fbit", tmp);
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} else {
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if (tmp >= 1000.0*1000000.0)
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snprintf(buf, len, "%.0fMbit", tmp/1000000.0);
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else if (tmp >= 1000.0 * 1000.0)
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snprintf(buf, len, "%.0fKbit", tmp/1000.0);
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else
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snprintf(buf, len, "%.0fbit", tmp);
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}
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}
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char * sprint_rate(__u32 rate, char *buf)
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{
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print_rate(buf, SPRINT_BSIZE-1, rate);
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return buf;
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}
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int get_usecs(unsigned *usecs, const char *str)
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{
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double t;
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char *p;
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t = strtod(str, &p);
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if (p == str)
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return -1;
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if (*p) {
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if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 ||
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strcasecmp(p, "secs")==0)
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t *= 1000000;
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else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 ||
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strcasecmp(p, "msecs") == 0)
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t *= 1000;
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else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 ||
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strcasecmp(p, "usecs") == 0)
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t *= 1;
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else
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return -1;
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}
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*usecs = t;
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return 0;
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}
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void print_usecs(char *buf, int len, __u32 usec)
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{
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double tmp = usec;
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if (tmp >= 1000000)
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snprintf(buf, len, "%.1fs", tmp/1000000);
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else if (tmp >= 1000)
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snprintf(buf, len, "%.1fms", tmp/1000);
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else
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snprintf(buf, len, "%uus", usec);
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}
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char * sprint_usecs(__u32 usecs, char *buf)
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{
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print_usecs(buf, SPRINT_BSIZE-1, usecs);
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return buf;
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}
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int get_size(unsigned *size, const char *str)
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{
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double sz;
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char *p;
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sz = strtod(str, &p);
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if (p == str)
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return -1;
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if (*p) {
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if (strcasecmp(p, "kb") == 0 || strcasecmp(p, "k")==0)
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sz *= 1024;
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else if (strcasecmp(p, "gb") == 0 || strcasecmp(p, "g")==0)
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sz *= 1024*1024*1024;
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else if (strcasecmp(p, "gbit") == 0)
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sz *= 1024*1024*1024/8;
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else if (strcasecmp(p, "mb") == 0 || strcasecmp(p, "m")==0)
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sz *= 1024*1024;
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else if (strcasecmp(p, "mbit") == 0)
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sz *= 1024*1024/8;
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else if (strcasecmp(p, "kbit") == 0)
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sz *= 1024/8;
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else if (strcasecmp(p, "b") != 0)
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return -1;
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}
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*size = sz;
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return 0;
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}
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int get_size_and_cell(unsigned *size, int *cell_log, char *str)
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{
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char * slash = strchr(str, '/');
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if (slash)
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*slash = 0;
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if (get_size(size, str))
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return -1;
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if (slash) {
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int cell;
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int i;
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if (get_integer(&cell, slash+1, 0))
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return -1;
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*slash = '/';
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for (i=0; i<32; i++) {
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if ((1<<i) == cell) {
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*cell_log = i;
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return 0;
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}
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}
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return -1;
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}
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return 0;
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}
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void print_size(char *buf, int len, __u32 sz)
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{
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double tmp = sz;
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if (sz >= 1024*1024 && fabs(1024*1024*rint(tmp/(1024*1024)) - sz) < 1024)
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snprintf(buf, len, "%gMb", rint(tmp/(1024*1024)));
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else if (sz >= 1024 && fabs(1024*rint(tmp/1024) - sz) < 16)
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snprintf(buf, len, "%gKb", rint(tmp/1024));
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else
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snprintf(buf, len, "%ub", sz);
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}
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char * sprint_size(__u32 size, char *buf)
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{
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print_size(buf, SPRINT_BSIZE-1, size);
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return buf;
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}
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static const double max_percent_value = 0xffffffff;
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int get_percent(__u32 *percent, const char *str)
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{
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char *p;
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double per = strtod(str, &p) / 100.;
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if (per > 1. || per < 0)
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return -1;
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if (*p && strcmp(p, "%"))
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return -1;
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*percent = (unsigned) rint(per * max_percent_value);
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return 0;
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}
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void print_percent(char *buf, int len, __u32 per)
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{
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snprintf(buf, len, "%g%%", 100. * (double) per / max_percent_value);
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}
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char * sprint_percent(__u32 per, char *buf)
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{
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print_percent(buf, SPRINT_BSIZE-1, per);
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return buf;
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}
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void print_qdisc_handle(char *buf, int len, __u32 h)
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{
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snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16);
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}
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char * sprint_qdisc_handle(__u32 h, char *buf)
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{
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print_qdisc_handle(buf, SPRINT_BSIZE-1, h);
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return buf;
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}
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char * action_n2a(int action, char *buf, int len)
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{
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switch (action) {
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case -1:
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return "continue";
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break;
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case TC_ACT_OK:
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return "pass";
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break;
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case TC_ACT_SHOT:
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return "drop";
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break;
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case TC_ACT_RECLASSIFY:
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return "reclassify";
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case TC_ACT_PIPE:
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return "pipe";
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case TC_ACT_STOLEN:
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return "stolen";
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default:
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snprintf(buf, len, "%d", action);
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return buf;
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}
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}
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int action_a2n(char *arg, int *result)
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{
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int res;
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if (matches(arg, "continue") == 0)
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res = -1;
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else if (matches(arg, "drop") == 0)
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res = TC_ACT_SHOT;
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else if (matches(arg, "shot") == 0)
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res = TC_ACT_SHOT;
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else if (matches(arg, "pass") == 0)
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res = TC_ACT_OK;
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else if (strcmp(arg, "ok") == 0)
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res = TC_ACT_OK;
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else if (matches(arg, "reclassify") == 0)
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res = TC_ACT_RECLASSIFY;
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else {
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char dummy;
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if (sscanf(arg, "%d%c", &res, &dummy) != 1)
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return -1;
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}
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*result = res;
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return 0;
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}
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void print_tm(FILE * f, const struct tcf_t *tm)
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{
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int hz = get_hz();
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if (tm->install != 0)
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fprintf(f, " installed %d sec", tm->install/hz);
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if (tm->lastuse != 0)
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fprintf(f, " used %d sec", tm->lastuse/hz);
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if (tm->expires != 0)
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fprintf(f, " expires %d sec", tm->expires/hz);
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}
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void print_tcstats2_attr(FILE *fp, struct rtattr *rta, char *prefix, struct rtattr **xstats)
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{
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SPRINT_BUF(b1);
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struct rtattr *tbs[TCA_STATS_MAX + 1] = {0};
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parse_rtattr(tbs, TCA_STATS_MAX, RTA_DATA(rta), RTA_PAYLOAD(rta));
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if (tbs[TCA_STATS_BASIC]) {
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struct gnet_stats_basic bs = {0};
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memcpy(&bs, RTA_DATA(tbs[TCA_STATS_BASIC]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_BASIC]), sizeof(bs)));
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fprintf(fp, "%sSent %llu bytes %u pkt",
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prefix, (unsigned long long) bs.bytes, bs.packets);
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}
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if (tbs[TCA_STATS_QUEUE]) {
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struct gnet_stats_queue q = {0};
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memcpy(&q, RTA_DATA(tbs[TCA_STATS_QUEUE]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_QUEUE]), sizeof(q)));
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fprintf(fp, " (dropped %u, overlimits %u requeues %u) ",
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q.drops, q.overlimits, q.requeues);
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}
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if (tbs[TCA_STATS_RATE_EST]) {
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struct gnet_stats_rate_est re = {0};
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memcpy(&re, RTA_DATA(tbs[TCA_STATS_RATE_EST]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_RATE_EST]), sizeof(re)));
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fprintf(fp, "\n%srate %s %upps ",
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prefix, sprint_rate(re.bps, b1), re.pps);
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}
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if (tbs[TCA_STATS_QUEUE]) {
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struct gnet_stats_queue q = {0};
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memcpy(&q, RTA_DATA(tbs[TCA_STATS_QUEUE]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_QUEUE]), sizeof(q)));
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if (!tbs[TCA_STATS_RATE_EST])
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fprintf(fp, "\n%s", prefix);
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fprintf(fp, "backlog %s %up requeues %u ",
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sprint_size(q.backlog, b1), q.qlen, q.requeues);
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}
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if (xstats)
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*xstats = tbs[TCA_STATS_APP] ? : NULL;
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}
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void print_tcstats_attr(FILE *fp, struct rtattr *tb[], char *prefix, struct rtattr **xstats)
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{
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SPRINT_BUF(b1);
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if (tb[TCA_STATS2]) {
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print_tcstats2_attr(fp, tb[TCA_STATS2], prefix, xstats);
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if (xstats && NULL == *xstats)
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goto compat_xstats;
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return;
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}
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/* backward compatibility */
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if (tb[TCA_STATS]) {
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struct tc_stats st;
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/* handle case where kernel returns more/less than we know about */
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memset(&st, 0, sizeof(st));
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memcpy(&st, RTA_DATA(tb[TCA_STATS]), MIN(RTA_PAYLOAD(tb[TCA_STATS]), sizeof(st)));
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fprintf(fp, "%sSent %llu bytes %u pkts (dropped %u, overlimits %u) ",
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prefix, (unsigned long long)st.bytes, st.packets, st.drops,
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st.overlimits);
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if (st.bps || st.pps || st.qlen || st.backlog) {
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fprintf(fp, "\n%s", prefix);
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if (st.bps || st.pps) {
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fprintf(fp, "rate ");
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if (st.bps)
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fprintf(fp, "%s ", sprint_rate(st.bps, b1));
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if (st.pps)
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fprintf(fp, "%upps ", st.pps);
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}
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if (st.qlen || st.backlog) {
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fprintf(fp, "backlog ");
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if (st.backlog)
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fprintf(fp, "%s ", sprint_size(st.backlog, b1));
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if (st.qlen)
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fprintf(fp, "%up ", st.qlen);
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}
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}
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}
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compat_xstats:
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if (tb[TCA_XSTATS] && xstats)
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*xstats = tb[TCA_XSTATS];
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}
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