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selftests/bpf: Use ping6 only if available in tc_redirect

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In the tc_redirect test only use ping6 if it's available and
otherwise fall back to using "ping -6".

Signed-off-by: Jussi Maki <joamaki@gmail.com>
This commit is contained in:
Jussi Maki 2021-07-08 02:17:27 +00:00 committed by Andrii Nakryiko
parent 793eccae89
commit 4cda0c82a3
1 changed files with 17 additions and 6 deletions
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23
tools/testing/selftests/bpf/prog_tests/tc_redirect.c
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@ -13,15 +13,16 @@
#define _GNU_SOURCE
#include <arpa/inet.h>
#include <linux/if.h>
#include <linux/if_tun.h>
#include <linux/limits.h>
#include <linux/sysctl.h>
#include <linux/if_tun.h>
#include <linux/if.h>
#include <sched.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <unistd.h>
#include "test_progs.h"
#include "network_helpers.h"
@ -389,11 +390,21 @@ done:
close(client_fd);
}
static char *ping_command(int family)
{
if (family == AF_INET6) {
/* On some systems 'ping' doesn't support IPv6, so use ping6 if it is present. */
if (!system("which ping6 >/dev/null 2>&1"))
return "ping6";
else
return "ping -6";
}
return "ping";
}
static int test_ping(int family, const char *addr)
{
const char *ping = family == AF_INET6 ? "ping6" : "ping";
SYS("ip netns exec " NS_SRC " %s " PING_ARGS " %s > /dev/null", ping, addr);
SYS("ip netns exec " NS_SRC " %s " PING_ARGS " %s > /dev/null", ping_command(family), addr);
return 0;
fail:
return -1;