From: Hangbin Liu <liuhangbin@gmail.com>
To: netdev@vger.kernel.org
Cc: Jakub Kicinski <kuba@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Yi-Hung Wei <yihung.wei@gmail.com>,
David Miller <davem@davemloft.net>,
bpf@vger.kernel.org, William Tu <u9012063@gmail.com>,
Hangbin Liu <liuhangbin@gmail.com>
Subject: [PATCH net] selftests/bpf: set gopt opt_class to 0 if get tunnel opt failed
Date: Tue, 9 Mar 2021 11:22:14 +0800 [thread overview]
Message-ID: <20210309032214.2112438-1-liuhangbin@gmail.com> (raw)
When fixing the bpf test_tunnel.sh genve 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: 933a741e3b82 ("selftests/bpf: bpf tunnel test.")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
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);
--
2.26.2
next reply other threads:[~2021-03-09 3:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 3:22 Hangbin Liu [this message]
2021-03-09 18:53 ` [PATCH net] selftests/bpf: set gopt opt_class to 0 if get tunnel opt failed William Tu
2021-03-10 1:37 ` patchwork-bot+netdevbpf
2021-03-10 7:09 ` Hangbin Liu
2021-03-12 1:56 ` Hangbin Liu
2021-03-12 15:15 ` Daniel Borkmann
2021-03-15 6:57 ` Hangbin Liu
2021-03-15 16:32 ` Daniel Borkmann
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