From: Hangbin Liu <liuhangbin@xxxxxxxxx>
[ Upstream commit 31254dc9566221429d2cfb45fd5737985d70f2b6 ]
When fixing the bpf test_tunnel.sh geneve failure. I only fixed the IPv4
part but forgot the IPv6 issue. Similar with the IPv4 fixes 557c223b643a
("selftests/bpf: No need to drop the packet when there is no geneve opt"),
when there is no tunnel option and bpf_skb_get_tunnel_opt() returns error,
there is no need to drop the packets and break all geneve rx traffic.
Just set opt_class to 0 and keep returning TC_ACT_OK at the end.
Fixes: 557c223b643a ("selftests/bpf: No need to drop the packet when there is no geneve opt")
Fixes: 933a741e3b82 ("selftests/bpf: bpf tunnel test.")
Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Acked-by: William Tu <u9012063@xxxxxxxxx>
Link: https://lore.kernel.org/bpf/20210309032214.2112438-1-liuhangbin@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/testing/selftests/bpf/progs/test_tunnel_kern.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
index 9afe947cfae9..ba6eadfec565 100644
--- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
@@ -508,10 +508,8 @@ int _ip6geneve_get_tunnel(struct __sk_buff *skb)
}
ret = bpf_skb_get_tunnel_opt(skb, &gopt, sizeof(gopt));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
+ if (ret < 0)
+ gopt.opt_class = 0;
bpf_trace_printk(fmt, sizeof(fmt),
key.tunnel_id, key.remote_ipv4, gopt.opt_class);
--
2.30.1
