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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>
This commit is contained in:
Jakub Kicinski 2019-02-27 19:04:10 -08:00 committed by Daniel Borkmann
parent ebace0e981
commit 5c3cf87d47
5 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
samples/bpf/sock_example.c
View File

@ -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();

2
samples/bpf/sockex1_user.c
View File

@ -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++) {

2
samples/bpf/sockex2_user.c
View File

@ -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++) {

2
samples/bpf/sockex3_user.c
View File

@ -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;

2
samples/bpf/tracex2_user.c
View File

@ -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 */