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c317d3f246
This allows Zebra to manage QDISC, TCLASS, TFILTER in kernel and do cleaning jobs when it starts up. Signed-off-by: Siger Yang <siger.yang@outlook.com>
89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
/*
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* Traffic Control (TC) main library
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* Copyright (C) 2022 Shichu Yang
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "tc.h"
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int tc_getrate(const char *str, uint64_t *rate)
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{
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char *endp;
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uint64_t raw = strtoull(str, &endp, 10);
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if (endp == str)
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return -1;
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/* if the string only contains a number, it must be valid rate (bps) */
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bool valid = (*endp == '\0');
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const char *p = endp;
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bool bytes = false, binary_base = false;
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int power = 0;
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while (*p) {
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if (strcmp(p, "Bps") == 0) {
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bytes = true;
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valid = true;
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break;
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} else if (strcmp(p, "bit") == 0) {
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valid = true;
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break;
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}
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switch (*p) {
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case 'k':
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case 'K':
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power = 1;
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break;
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case 'm':
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case 'M':
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power = 2;
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break;
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case 'g':
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case 'G':
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power = 3;
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break;
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case 't':
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case 'T':
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power = 4;
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break;
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case 'i':
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case 'I':
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if (power != 0)
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binary_base = true;
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else
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return -1;
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break;
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default:
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return -1;
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}
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p++;
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}
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if (!valid)
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return -1;
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for (int i = 0; i < power; i++)
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raw *= binary_base ? 1024ULL : 1000ULL;
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if (bytes)
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*rate = raw;
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else
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*rate = raw / 8ULL;
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return 0;
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}
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