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 <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
ambv · Feb 28, 2019 · 5c3cf87 · 5c3cf87
1 parent ebace0e
commit 5c3cf87
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Showing 5 changed files with 5 additions and 5 deletions.
diff --git a/samples/bpf/sock_example.c b/samples/bpf/sock_example.c
@@ -99,7 +99,7 @@ int main(void)
 {
 	FILE *f;
 
-	f = popen("ping -c5 localhost", "r");
+	f = popen("ping -4 -c5 localhost", "r");
 	(void)f;
 
 	return test_sock();

diff --git a/samples/bpf/sockex1_user.c b/samples/bpf/sockex1_user.c
@@ -26,7 +26,7 @@ int main(int ac, char **argv)
 	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
 			  sizeof(prog_fd[0])) == 0);
 
-	f = popen("ping -c5 localhost", "r");
+	f = popen("ping -4 -c5 localhost", "r");
 	(void) f;
 
 	for (i = 0; i < 5; i++) {

diff --git a/samples/bpf/sockex2_user.c b/samples/bpf/sockex2_user.c
@@ -34,7 +34,7 @@ int main(int ac, char **argv)
 	assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
 			  sizeof(prog_fd[0])) == 0);
 
-	f = popen("ping -c5 localhost", "r");
+	f = popen("ping -4 -c5 localhost", "r");
 	(void) f;
 
 	for (i = 0; i < 5; i++) {

diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c
@@ -58,7 +58,7 @@ int main(int argc, char **argv)
 			  sizeof(__u32)) == 0);
 
 	if (argc > 1)
-		f = popen("ping -c5 localhost", "r");
+		f = popen("ping -4 -c5 localhost", "r");
 	else
 		f = popen("netperf -l 4 localhost", "r");
 	(void) f;

diff --git a/samples/bpf/tracex2_user.c b/samples/bpf/tracex2_user.c
@@ -131,7 +131,7 @@ int main(int ac, char **argv)
 	signal(SIGTERM, int_exit);
 
 	/* start 'ping' in the background to have some kfree_skb events */
-	f = popen("ping -c5 localhost", "r");
+	f = popen("ping -4 -c5 localhost", "r");
 	(void) f;
 
 	/* start 'dd' in the background to have plenty of 'write' syscalls */