/*
|
* tc_monitor.c "tc monitor".
|
*
|
* 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: Jamal Hadi Salim
|
*
|
*/
|
|
#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 <time.h>
|
#include "rt_names.h"
|
#include "utils.h"
|
#include "tc_util.h"
|
#include "tc_common.h"
|
|
|
static void usage(void) __attribute__((noreturn));
|
|
static void usage(void)
|
{
|
fprintf(stderr, "Usage: tc [-timestamp [-tshort] monitor\n");
|
exit(-1);
|
}
|
|
|
static int accept_tcmsg(const struct sockaddr_nl *who,
|
struct rtnl_ctrl_data *ctrl,
|
struct nlmsghdr *n, void *arg)
|
{
|
FILE *fp = (FILE *)arg;
|
|
if (timestamp)
|
print_timestamp(fp);
|
|
if (n->nlmsg_type == RTM_NEWTFILTER || n->nlmsg_type == RTM_DELTFILTER) {
|
print_filter(who, n, arg);
|
return 0;
|
}
|
if (n->nlmsg_type == RTM_NEWTCLASS || n->nlmsg_type == RTM_DELTCLASS) {
|
print_class(who, n, arg);
|
return 0;
|
}
|
if (n->nlmsg_type == RTM_NEWQDISC || n->nlmsg_type == RTM_DELQDISC) {
|
print_qdisc(who, n, arg);
|
return 0;
|
}
|
if (n->nlmsg_type == RTM_GETACTION || n->nlmsg_type == RTM_NEWACTION ||
|
n->nlmsg_type == RTM_DELACTION) {
|
print_action(who, n, arg);
|
return 0;
|
}
|
if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP &&
|
n->nlmsg_type != NLMSG_DONE) {
|
fprintf(fp, "Unknown message: length %08d type %08x flags %08x\n",
|
n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
|
}
|
return 0;
|
}
|
|
int do_tcmonitor(int argc, char **argv)
|
{
|
struct rtnl_handle rth;
|
char *file = NULL;
|
unsigned int groups = nl_mgrp(RTNLGRP_TC);
|
|
while (argc > 0) {
|
if (matches(*argv, "file") == 0) {
|
NEXT_ARG();
|
file = *argv;
|
} else {
|
if (matches(*argv, "help") == 0) {
|
usage();
|
} else {
|
fprintf(stderr, "Argument \"%s\" is unknown, try \"tc monitor help\".\n", *argv);
|
exit(-1);
|
}
|
}
|
argc--; argv++;
|
}
|
|
if (file) {
|
FILE *fp = fopen(file, "r");
|
int ret;
|
|
if (fp == NULL) {
|
perror("Cannot fopen");
|
exit(-1);
|
}
|
|
ret = rtnl_from_file(fp, accept_tcmsg, stdout);
|
fclose(fp);
|
return ret;
|
}
|
|
if (rtnl_open(&rth, groups) < 0)
|
exit(1);
|
|
ll_init_map(&rth);
|
|
if (rtnl_listen(&rth, accept_tcmsg, (void *)stdout) < 0) {
|
rtnl_close(&rth);
|
exit(2);
|
}
|
|
rtnl_close(&rth);
|
exit(0);
|
}
|
