151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
/*
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* tc_stab.c "tc qdisc ... stab *".
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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: Jussi Kivilinna, <jussi.kivilinna@mbnet.fi>
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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 <math.h>
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#include <sys/socket.h>
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#include <sys/param.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 <malloc.h>
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#include "utils.h"
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#include "tc_util.h"
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#include "tc_core.h"
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#include "tc_common.h"
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static void stab_help(void)
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{
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fprintf(stderr,
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"Usage: ... stab [ mtu BYTES ] [ tsize SLOTS ] [ mpu BYTES ]\n"
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" [ overhead BYTES ] [ linklayer TYPE ] ...\n"
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" mtu : max packet size we create rate map for {2047}\n"
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" tsize : how many slots should size table have {512}\n"
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" mpu : minimum packet size used in rate computations\n"
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" overhead : per-packet size overhead used in rate computations\n"
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" linklayer : adapting to a linklayer e.g. atm\n"
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"Example: ... stab overhead 20 linklayer atm\n");
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}
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int check_size_table_opts(struct tc_sizespec *s)
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{
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return s->linklayer >= LINKLAYER_ETHERNET || s->mpu != 0 ||
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s->overhead != 0;
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}
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int parse_size_table(int *argcp, char ***argvp, struct tc_sizespec *sp)
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{
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char **argv = *argvp;
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int argc = *argcp;
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struct tc_sizespec s = {};
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NEXT_ARG();
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if (matches(*argv, "help") == 0) {
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stab_help();
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return -1;
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}
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while (argc > 0) {
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if (matches(*argv, "mtu") == 0) {
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NEXT_ARG();
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if (s.mtu)
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duparg("mtu", *argv);
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if (get_u32(&s.mtu, *argv, 10))
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invarg("mtu", "invalid mtu");
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} else if (matches(*argv, "mpu") == 0) {
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NEXT_ARG();
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if (s.mpu)
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duparg("mpu", *argv);
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if (get_u32(&s.mpu, *argv, 10))
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invarg("mpu", "invalid mpu");
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} else if (matches(*argv, "overhead") == 0) {
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NEXT_ARG();
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if (s.overhead)
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duparg("overhead", *argv);
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if (get_integer(&s.overhead, *argv, 10))
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invarg("overhead", "invalid overhead");
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} else if (matches(*argv, "tsize") == 0) {
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NEXT_ARG();
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if (s.tsize)
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duparg("tsize", *argv);
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if (get_u32(&s.tsize, *argv, 10))
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invarg("tsize", "invalid table size");
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} else if (matches(*argv, "linklayer") == 0) {
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NEXT_ARG();
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if (s.linklayer != LINKLAYER_UNSPEC)
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duparg("linklayer", *argv);
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if (get_linklayer(&s.linklayer, *argv))
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invarg("linklayer", "invalid linklayer");
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} else
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break;
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argc--; argv++;
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}
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if (!check_size_table_opts(&s))
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return -1;
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*sp = s;
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*argvp = argv;
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*argcp = argc;
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return 0;
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}
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void print_size_table(FILE *fp, const char *prefix, struct rtattr *rta)
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{
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struct rtattr *tb[TCA_STAB_MAX + 1];
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SPRINT_BUF(b1);
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parse_rtattr_nested(tb, TCA_STAB_MAX, rta);
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if (tb[TCA_STAB_BASE]) {
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struct tc_sizespec s = {0};
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memcpy(&s, RTA_DATA(tb[TCA_STAB_BASE]),
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MIN(RTA_PAYLOAD(tb[TCA_STAB_BASE]), sizeof(s)));
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fprintf(fp, "%s", prefix);
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if (s.linklayer)
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fprintf(fp, "linklayer %s ",
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sprint_linklayer(s.linklayer, b1));
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if (s.overhead)
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fprintf(fp, "overhead %d ", s.overhead);
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if (s.mpu)
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fprintf(fp, "mpu %u ", s.mpu);
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if (s.mtu)
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fprintf(fp, "mtu %u ", s.mtu);
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if (s.tsize)
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fprintf(fp, "tsize %u ", s.tsize);
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}
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#if 0
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if (tb[TCA_STAB_DATA]) {
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unsigned int i, j, dlen;
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__u16 *data = RTA_DATA(tb[TCA_STAB_DATA]);
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dlen = RTA_PAYLOAD(tb[TCA_STAB_DATA]) / sizeof(__u16);
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fprintf(fp, "\n%sstab data:", prefix);
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for (i = 0; i < dlen/12; i++) {
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fprintf(fp, "\n%s %3u:", prefix, i * 12);
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for (j = 0; i * 12 + j < dlen; j++)
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fprintf(fp, " %05x", data[i * 12 + j]);
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}
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}
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#endif
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}
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