+++ /dev/null
-/*
- * tc_util.c Misc TC utility functions.
- *
- * 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, const 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_tc_classid(__u32 *h, const char *str)
-{
- __u32 maj, min;
- char *p;
-
- maj = TC_H_ROOT;
- if (strcmp(str, "root") == 0)
- goto ok;
- maj = TC_H_UNSPEC;
- if (strcmp(str, "none") == 0)
- goto ok;
- maj = strtoul(str, &p, 16);
- if (p == str) {
- maj = 0;
- if (*p != ':')
- return -1;
- }
- if (*p == ':') {
- if (maj >= (1<<16))
- return -1;
- maj <<= 16;
- str = p+1;
- min = strtoul(str, &p, 16);
- if (*p != 0)
- return -1;
- if (min >= (1<<16))
- return -1;
- maj |= min;
- } else if (*p != 0)
- return -1;
-
-ok:
- *h = maj;
- return 0;
-}
-
-int print_tc_classid(char *buf, int len, __u32 h)
-{
- if (h == TC_H_ROOT)
- sprintf(buf, "root");
- else if (h == TC_H_UNSPEC)
- snprintf(buf, len, "none");
- else if (TC_H_MAJ(h) == 0)
- snprintf(buf, len, ":%x", TC_H_MIN(h));
- else if (TC_H_MIN(h) == 0)
- snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16);
- else
- snprintf(buf, len, "%x:%x", TC_H_MAJ(h)>>16, TC_H_MIN(h));
- return 0;
-}
-
-char * sprint_tc_classid(__u32 h, char *buf)
-{
- if (print_tc_classid(buf, SPRINT_BSIZE-1, h))
- strcpy(buf, "???");
- return buf;
-}
-
-/* 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') {
- *rate = bps / 8.; /* assume bytes/sec */
- 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)
-{
- char * slash = strchr(str, '/');
-
- if (slash)
- *slash = 0;
-
- if (get_rate(rate, str))
- return -1;
-
- if (slash) {
- int cell;
- int i;
-
- if (get_integer(&cell, slash+1, 0))
- return -1;
- *slash = '/';
-
- for (i=0; i<32; i++) {
- if ((1<<i) == cell) {
- *cell_log = i;
- return 0;
- }
- }
- return -1;
- }
- return 0;
-}
-
-void print_rate(char *buf, int len, __u32 rate)
-{
- double tmp = (double)rate*8;
- extern int use_iec;
-
- if (use_iec) {
- if (tmp >= 1000.0*1024.0*1024.0)
- snprintf(buf, len, "%.0fMibit", tmp/1024.0*1024.0);
- else if (tmp >= 1000.0*1024)
- snprintf(buf, len, "%.0fKibit", tmp/1024);
- else
- snprintf(buf, len, "%.0fbit", tmp);
- } else {
- if (tmp >= 1000.0*1000000.0)
- snprintf(buf, len, "%.0fMbit", tmp/1000000.0);
- else if (tmp >= 1000.0 * 1000.0)
- snprintf(buf, len, "%.0fKbit", tmp/1000.0);
- else
- snprintf(buf, len, "%.0fbit", tmp);
- }
-}
-
-char * sprint_rate(__u32 rate, char *buf)
-{
- print_rate(buf, SPRINT_BSIZE-1, rate);
- return buf;
-}
-
-int get_usecs(unsigned *usecs, const 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")==0)
- 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;
-}
-
-
-void 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);
-}
-
-char * sprint_usecs(__u32 usecs, char *buf)
-{
- print_usecs(buf, SPRINT_BSIZE-1, usecs);
- return buf;
-}
-
-int get_size(unsigned *size, const 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, "gb") == 0 || strcasecmp(p, "g")==0)
- sz *= 1024*1024*1024;
- else if (strcasecmp(p, "gbit") == 0)
- sz *= 1024*1024*1024/8;
- 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 (get_integer(&cell, slash+1, 0))
- return -1;
- *slash = '/';
-
- for (i=0; i<32; i++) {
- if ((1<<i) == cell) {
- *cell_log = i;
- return 0;
- }
- }
- return -1;
- }
- return 0;
-}
-
-void 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);
-}
-
-char * sprint_size(__u32 size, char *buf)
-{
- print_size(buf, SPRINT_BSIZE-1, size);
- return buf;
-}
-
-static const double max_percent_value = 0xffffffff;
-
-int get_percent(__u32 *percent, const char *str)
-{
- char *p;
- double per = strtod(str, &p) / 100.;
-
- if (per > 1. || per < 0)
- return -1;
- if (*p && strcmp(p, "%"))
- return -1;
-
- *percent = (unsigned) rint(per * max_percent_value);
- return 0;
-}
-
-void print_percent(char *buf, int len, __u32 per)
-{
- snprintf(buf, len, "%g%%", 100. * (double) per / max_percent_value);
-}
-
-char * sprint_percent(__u32 per, char *buf)
-{
- print_percent(buf, SPRINT_BSIZE-1, per);
- return buf;
-}
-
-void print_qdisc_handle(char *buf, int len, __u32 h)
-{
- snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16);
-}
-
-char * sprint_qdisc_handle(__u32 h, char *buf)
-{
- print_qdisc_handle(buf, SPRINT_BSIZE-1, h);
- return buf;
-}
-
-char * action_n2a(int action, char *buf, int len)
-{
- switch (action) {
- case -1:
- return "continue";
- break;
- case TC_ACT_OK:
- return "pass";
- break;
- case TC_ACT_SHOT:
- return "drop";
- break;
- case TC_ACT_RECLASSIFY:
- return "reclassify";
- case TC_ACT_PIPE:
- return "pipe";
- case TC_ACT_STOLEN:
- return "stolen";
- default:
- snprintf(buf, len, "%d", action);
- return buf;
- }
-}
-
-int action_a2n(char *arg, int *result)
-{
- int res;
-
- if (matches(arg, "continue") == 0)
- res = -1;
- else if (matches(arg, "drop") == 0)
- res = TC_ACT_SHOT;
- else if (matches(arg, "shot") == 0)
- res = TC_ACT_SHOT;
- else if (matches(arg, "pass") == 0)
- res = TC_ACT_OK;
- else if (strcmp(arg, "ok") == 0)
- res = TC_ACT_OK;
- else if (matches(arg, "reclassify") == 0)
- res = TC_ACT_RECLASSIFY;
- else {
- char dummy;
- if (sscanf(arg, "%d%c", &res, &dummy) != 1)
- return -1;
- }
- *result = res;
- return 0;
-}
-
-void print_tm(FILE * f, const struct tcf_t *tm)
-{
- int hz = get_user_hz();
- if (tm->install != 0)
- fprintf(f, " installed %u sec", (unsigned)(tm->install/hz));
- if (tm->lastuse != 0)
- fprintf(f, " used %u sec", (unsigned)(tm->lastuse/hz));
- if (tm->expires != 0)
- fprintf(f, " expires %u sec", (unsigned)(tm->expires/hz));
-}
-
-void print_tcstats2_attr(FILE *fp, struct rtattr *rta, char *prefix, struct rtattr **xstats)
-{
- SPRINT_BUF(b1);
- struct rtattr *tbs[TCA_STATS_MAX + 1];
-
- parse_rtattr_nested(tbs, TCA_STATS_MAX, rta);
-
- if (tbs[TCA_STATS_BASIC]) {
- struct gnet_stats_basic bs = {0};
- memcpy(&bs, RTA_DATA(tbs[TCA_STATS_BASIC]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_BASIC]), sizeof(bs)));
- fprintf(fp, "%sSent %llu bytes %u pkt",
- prefix, (unsigned long long) bs.bytes, bs.packets);
- }
-
- if (tbs[TCA_STATS_QUEUE]) {
- struct gnet_stats_queue q = {0};
- memcpy(&q, RTA_DATA(tbs[TCA_STATS_QUEUE]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_QUEUE]), sizeof(q)));
- fprintf(fp, " (dropped %u, overlimits %u requeues %u) ",
- q.drops, q.overlimits, q.requeues);
- }
-
- if (tbs[TCA_STATS_RATE_EST]) {
- struct gnet_stats_rate_est re = {0};
- memcpy(&re, RTA_DATA(tbs[TCA_STATS_RATE_EST]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_RATE_EST]), sizeof(re)));
- fprintf(fp, "\n%srate %s %upps ",
- prefix, sprint_rate(re.bps, b1), re.pps);
- }
-
- if (tbs[TCA_STATS_QUEUE]) {
- struct gnet_stats_queue q = {0};
- memcpy(&q, RTA_DATA(tbs[TCA_STATS_QUEUE]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_QUEUE]), sizeof(q)));
- if (!tbs[TCA_STATS_RATE_EST])
- fprintf(fp, "\n%s", prefix);
- fprintf(fp, "backlog %s %up requeues %u ",
- sprint_size(q.backlog, b1), q.qlen, q.requeues);
- }
-
- if (xstats)
- *xstats = tbs[TCA_STATS_APP] ? : NULL;
-}
-
-void print_tcstats_attr(FILE *fp, struct rtattr *tb[], char *prefix, struct rtattr **xstats)
-{
- SPRINT_BUF(b1);
-
- if (tb[TCA_STATS2]) {
- print_tcstats2_attr(fp, tb[TCA_STATS2], prefix, xstats);
- if (xstats && NULL == *xstats)
- goto compat_xstats;
- return;
- }
- /* backward compatibility */
- if (tb[TCA_STATS]) {
- struct tc_stats st;
-
- /* handle case where kernel returns more/less than we know about */
- memset(&st, 0, sizeof(st));
- memcpy(&st, RTA_DATA(tb[TCA_STATS]), MIN(RTA_PAYLOAD(tb[TCA_STATS]), sizeof(st)));
-
- fprintf(fp, "%sSent %llu bytes %u pkts (dropped %u, overlimits %u) ",
- prefix, (unsigned long long)st.bytes, st.packets, st.drops,
- st.overlimits);
-
- if (st.bps || st.pps || st.qlen || st.backlog) {
- fprintf(fp, "\n%s", prefix);
- if (st.bps || st.pps) {
- fprintf(fp, "rate ");
- if (st.bps)
- fprintf(fp, "%s ", sprint_rate(st.bps, b1));
- if (st.pps)
- fprintf(fp, "%upps ", st.pps);
- }
- if (st.qlen || st.backlog) {
- fprintf(fp, "backlog ");
- if (st.backlog)
- fprintf(fp, "%s ", sprint_size(st.backlog, b1));
- if (st.qlen)
- fprintf(fp, "%up ", st.qlen);
- }
- }
- }
-
-compat_xstats:
- if (tb[TCA_XSTATS] && xstats)
- *xstats = tb[TCA_XSTATS];
-}
-
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