netdev - [PATCH v1 bpf-next 06/10] selftests/bpf: Add tests for bucket resume logic in listening sockets

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Message-ID: <20250520145059.1773738-7-jordan@jrife.io>
Date: Tue, 20 May 2025 07:50:53 -0700
From: Jordan Rife <jordan@...fe.io>
To: netdev@...r.kernel.org,
	bpf@...r.kernel.org
Cc: Jordan Rife <jordan@...fe.io>,
	Daniel Borkmann <daniel@...earbox.net>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Willem de Bruijn <willemdebruijn.kernel@...il.com>,
	Kuniyuki Iwashima <kuniyu@...zon.com>,
	Alexei Starovoitov <alexei.starovoitov@...il.com>
Subject: [PATCH v1 bpf-next 06/10] selftests/bpf: Add tests for bucket resume logic in listening sockets

Replicate the set of test cases used for UDP socket iterators to test
similar scenarios for TCP listening sockets.

Signed-off-by: Jordan Rife <jordan@...fe.io>
---
 .../bpf/prog_tests/sock_iter_batch.c          | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c b/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
index a4517bee34d5..2adacd91fdf8 100644
--- a/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
+++ b/tools/testing/selftests/bpf/prog_tests/sock_iter_batch.c
@@ -358,6 +358,53 @@ static struct test_case resume_tests[] = {
 		.family = AF_INET6,
 		.test = force_realloc,
 	},
+	{
+		.description = "tcp: resume after removing a seen socket (listening)",
+		.init_socks = nr_soreuse,
+		.max_socks = nr_soreuse,
+		.sock_type = SOCK_STREAM,
+		.family = AF_INET6,
+		.test = remove_seen,
+	},
+	{
+		.description = "tcp: resume after removing one unseen socket (listening)",
+		.init_socks = nr_soreuse,
+		.max_socks = nr_soreuse,
+		.sock_type = SOCK_STREAM,
+		.family = AF_INET6,
+		.test = remove_unseen,
+	},
+	{
+		.description = "tcp: resume after removing all unseen sockets (listening)",
+		.init_socks = nr_soreuse,
+		.max_socks = nr_soreuse,
+		.sock_type = SOCK_STREAM,
+		.family = AF_INET6,
+		.test = remove_all,
+	},
+	{
+		.description = "tcp: resume after adding a few sockets (listening)",
+		.init_socks = nr_soreuse,
+		.max_socks = nr_soreuse,
+		.sock_type = SOCK_STREAM,
+		/* Use AF_INET so that new sockets are added to the head of the
+		 * bucket's list.
+		 */
+		.family = AF_INET,
+		.test = add_some,
+	},
+	{
+		.description = "tcp: force a realloc to occur (listening)",
+		.init_socks = init_batch_size,
+		.max_socks = init_batch_size * 2,
+		.sock_type = SOCK_STREAM,
+		/* Use AF_INET6 so that new sockets are added to the tail of the
+		 * bucket's list, needing to be added to the next batch to force
+		 * a realloc.
+		 */
+		.family = AF_INET6,
+		.test = force_realloc,
+	},
 };
 
 static void do_resume_test(struct test_case *tc)
-- 
2.43.0