netdev - [PATCH bpf-next v2 05/10] selftests/bpf: test_xdp_veth: Add XDP flags to prog

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Message-Id: <20250121-redirect-multi-v2-5-fc9cacabc6b2@bootlin.com>
Date: Tue, 21 Jan 2025 14:01:27 +0100
From: "Bastien Curutchet (eBPF Foundation)" <bastien.curutchet@...tlin.com>
To: Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, 
 "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
 Jesper Dangaard Brouer <hawk@...nel.org>, 
 John Fastabend <john.fastabend@...il.com>, 
 Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Mykola Lysenko <mykolal@...com>, 
 Shuah Khan <shuah@...nel.org>
Cc: Alexis Lothore <alexis.lothore@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org, 
 bpf@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 "Bastien Curutchet (eBPF Foundation)" <bastien.curutchet@...tlin.com>
Subject: [PATCH bpf-next v2 05/10] selftests/bpf: test_xdp_veth: Add XDP
 flags to prog_configuration

XDP flags are hardcoded to 0 at attachment.

Add flags attributes to the struct prog_configuration to allow flag
modifications for each test case.

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@...tlin.com>
---
 tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c b/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c
index b2b4f6958940f7bce66953568d18fb10e12130e5..0aa1583b741b15f573bbb979b2047a0109070544 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c
@@ -77,6 +77,8 @@ static struct veth_configuration net_config[VETH_PAIRS_COUNT] = {
 struct prog_configuration {
 	char local_name[PROG_NAME_MAX_LEN]; /* BPF prog to attach to local_veth */
 	char remote_name[PROG_NAME_MAX_LEN]; /* BPF prog to attach to remote_veth */
+	u32 local_flags; /* XDP flags to use on local_veth */
+	u32 remote_flags; /* XDP flags to use on remote_veth */
 };

 static int attach_programs_to_veth_pair(struct bpf_object **objs, size_t nb_obj,
@@ -106,7 +108,8 @@ static int attach_programs_to_veth_pair(struct bpf_object **objs, size_t nb_obj,
 	if (!ASSERT_NEQ(interface, 0, "non zero interface index"))
 		return -1;

-	ret = bpf_xdp_attach(interface, bpf_program__fd(local_prog), 0, NULL);
+	ret = bpf_xdp_attach(interface, bpf_program__fd(local_prog),
+			     prog[index].local_flags, NULL);
 	if (!ASSERT_OK(ret, "attach xdp program to local veth"))
 		return -1;

@@ -120,7 +123,8 @@ static int attach_programs_to_veth_pair(struct bpf_object **objs, size_t nb_obj,
 		return -1;
 	}

-	ret = bpf_xdp_attach(interface, bpf_program__fd(remote_prog), 0, NULL);
+	ret = bpf_xdp_attach(interface, bpf_program__fd(remote_prog),
+			     prog[index].remote_flags, NULL);
 	if (!ASSERT_OK(ret, "attach xdp program to remote veth")) {
 		close_netns(nstoken);
 		return -1;
@@ -187,14 +191,20 @@ void test_xdp_veth_redirect(void)
 		{
 			.local_name = "xdp_redirect_map_0",
 			.remote_name = "xdp_dummy_prog",
+			.local_flags = 0,
+			.remote_flags = 0,
 		},
 		{
 			.local_name = "xdp_redirect_map_1",
 			.remote_name = "xdp_tx",
+			.local_flags = 0,
+			.remote_flags = 0,
 		},
 		{
 			.local_name = "xdp_redirect_map_2",
 			.remote_name = "xdp_dummy_prog",
+			.local_flags = 0,
+			.remote_flags = 0,
 		}
 	};
 	struct bpf_object *bpf_objs[VETH_REDIRECT_SKEL_NB];

-- 
2.47.1