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927e3cfb52
This patch adapts the tc command line interface to allow bandwidth limits to be specified as a percentage of the interface's capacity. Adding this functionality requires passing the specified device string to each class/qdisc which changes the prototype for a couple of functions: the .parse_qopt and .parse_copt interfaces. The device string is a required parameter for tc-qdisc and tc-class, and when not specified, the kernel returns ENODEV. In this patch, if the user tries to specify a bandwidth percentage without naming the device, we return an error from userspace. Signed-off-by: Nishanth Devarajan<ndev2021@gmail.com>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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* q_ingress.c INGRESS.
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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: J Hadi Salim
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*/
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#include <stdio.h>
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#include <string.h>
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#include "utils.h"
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#include "tc_util.h"
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static void explain(void)
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{
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fprintf(stderr, "Usage: ... ingress\n");
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}
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static int ingress_parse_opt(struct qdisc_util *qu, int argc, char **argv,
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struct nlmsghdr *n, const char *dev)
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{
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while (argc > 0) {
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if (strcmp(*argv, "handle") == 0) {
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NEXT_ARG();
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argc--; argv++;
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} else {
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fprintf(stderr, "What is \"%s\"?\n", *argv);
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explain();
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return -1;
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}
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}
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return 0;
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}
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static int ingress_print_opt(struct qdisc_util *qu, FILE *f,
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struct rtattr *opt)
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{
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fprintf(f, "---------------- ");
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return 0;
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}
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struct qdisc_util ingress_qdisc_util = {
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.id = "ingress",
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.parse_qopt = ingress_parse_opt,
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.print_qopt = ingress_print_opt,
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};
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