samples: bpf: force IPv4 in ping
ping localhost may default of IPv6 on modern systems, but samples are trying to only parse IPv4. Force IPv4. samples/bpf/tracex1_user.c doesn't interpret the packet so we don't care which IP version will be used there. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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@ -99,7 +99,7 @@ int main(void)
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{
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FILE *f;
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f = popen("ping -c5 localhost", "r");
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f = popen("ping -4 -c5 localhost", "r");
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(void)f;
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return test_sock();
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@ -26,7 +26,7 @@ int main(int ac, char **argv)
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assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
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sizeof(prog_fd[0])) == 0);
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f = popen("ping -c5 localhost", "r");
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f = popen("ping -4 -c5 localhost", "r");
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(void) f;
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for (i = 0; i < 5; i++) {
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@ -34,7 +34,7 @@ int main(int ac, char **argv)
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assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
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sizeof(prog_fd[0])) == 0);
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f = popen("ping -c5 localhost", "r");
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f = popen("ping -4 -c5 localhost", "r");
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(void) f;
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for (i = 0; i < 5; i++) {
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@ -58,7 +58,7 @@ int main(int argc, char **argv)
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sizeof(__u32)) == 0);
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if (argc > 1)
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f = popen("ping -c5 localhost", "r");
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f = popen("ping -4 -c5 localhost", "r");
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else
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f = popen("netperf -l 4 localhost", "r");
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(void) f;
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@ -131,7 +131,7 @@ int main(int ac, char **argv)
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signal(SIGTERM, int_exit);
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/* start 'ping' in the background to have some kfree_skb events */
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f = popen("ping -c5 localhost", "r");
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f = popen("ping -4 -c5 localhost", "r");
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(void) f;
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/* start 'dd' in the background to have plenty of 'write' syscalls */
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