From 8039d353217c1d9dae921f131cfe4153bc23e960 Mon Sep 17 00:00:00 2001
From: Nicolas Rybowski <nicolas.rybowski@tessares.net>
Date: Thu, 19 May 2022 16:30:12 -0700
Subject: selftests/bpf: Add MPTCP test base
This patch adds a base for MPTCP specific tests.
It is currently limited to the is_mptcp field in case of plain TCP
connection because there is no easy way to get the subflow sk from a msk
in userspace. This implies that we cannot lookup the sk_storage attached
to the subflow sk in the sockops program.
v4:
- add copyright 2022 (Andrii)
- use ASSERT_* instead of CHECK_FAIL (Andrii)
- drop SEC("version") (Andrii)
- use is_mptcp in tcp_sock, instead of bpf_tcp_sock (Martin & Andrii)
v5:
- Drop connect_to_mptcp_fd (Martin)
- Use BPF test skeleton (Andrii)
- Use ASSERT_EQ (Andrii)
- Drop the 'msg' parameter of verify_sk
Co-developed-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Nicolas Rybowski <nicolas.rybowski@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Link: https://lore.kernel.org/bpf/20220519233016.105670-4-mathew.j.martineau@linux.intel.com
---
tools/testing/selftests/bpf/bpf_tcp_helpers.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'tools/testing/selftests/bpf/bpf_tcp_helpers.h')
diff --git a/tools/testing/selftests/bpf/bpf_tcp_helpers.h b/tools/testing/selftests/bpf/bpf_tcp_helpers.h
index b1ede6f0b821..22e0c8849a17 100644
--- a/tools/testing/selftests/bpf/bpf_tcp_helpers.h
+++ b/tools/testing/selftests/bpf/bpf_tcp_helpers.h
@@ -81,6 +81,7 @@ struct tcp_sock {
__u32 lsndtime;
__u32 prior_cwnd;
__u64 tcp_mstamp; /* most recent packet received/sent */
+ bool is_mptcp;
} __attribute__((preserve_access_index));
static __always_inline struct inet_connection_sock *inet_csk(const struct sock *sk)
--
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