From patchwork Thu Feb 27 14:26:44 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiayuan Chen X-Patchwork-Id: 13994638 Received: from out-177.mta0.migadu.com (out-177.mta0.migadu.com [91.218.175.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C958231A22 for ; Thu, 27 Feb 2025 14:27:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740666441; cv=none; b=mYsd09LYBFKDdKJqAUC0H2cu7Yjr2PlhE0BfYX0VesrHJosNLY8a0HggssKPrXNFZT5dcEoUDvAThkoHJbjj/MQkGqVofHvF80ykpiEJpsmLAugMGL3bjUnmmZ10pdxAxh+eaj3M6DIpldVz82jwunG2Txe1M/XJARP7ywJIqbg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740666441; c=relaxed/simple; bh=9NJh4qWBaG6Re9XAkRIRu/sfCXk4U7OusKRVt14Xt5o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QAVgkxrzXe8+DJtTKCEj++5XwUNxlpjeoYQ9YqcX3TgjHLOitAckOgpkMProekyKJ5QmUueHRgYVqGa5dyJMRWCVfRu6RvbDUz6FYEslAzLk2+sINuiSijHnDVL/bbkhaop+18Qas0SAshT+CK0CjVQ4OPDdKPD/ZBc8MohxG4Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=nwmWaF96; arc=none smtp.client-ip=91.218.175.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="nwmWaF96" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1740666436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=s7AvVgItQBcIy3/yElChkvzIw9QALk+tx+dIFetvRkg=; b=nwmWaF96KstZUIDUwvmXpOsGOBzSQAJeUTep86aEKE0QY40D4ZU8xwstYHcScmI/ZkCKud BZ2OaoQXOqd07v0dJJA5DKbILtc0UF32ch5v9wEG1G7rObojUixm0EvtJX4vMlCUZrENFQ lN8Ykv+OXzoFmEIvecUy6DvzYcOBviY= From: Jiayuan Chen To: bpf@vger.kernel.org Cc: john.fastabend@gmail.com, davem@davemloft.net, kuba@kernel.org, andrii@kernel.org, eddyz87@gmail.com, mykolal@fb.com, ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, shuah@kernel.org, hawk@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, mrpre@163.com, Jiayuan Chen Subject: [PATCH bpf-next v1 1/3] selftests/bpf: Allow auto port binding for cgroup connect Date: Thu, 27 Feb 2025 22:26:44 +0800 Message-ID: <20250227142646.59711-2-jiayuan.chen@linux.dev> In-Reply-To: <20250227142646.59711-1-jiayuan.chen@linux.dev> References: <20250227142646.59711-1-jiayuan.chen@linux.dev> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT Allow auto port binding for cgroup connect test to avoid binding conflict. Result: ./test_progs -a cgroup_v1v2 59 cgroup_v1v2:OK Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Jiayuan Chen --- .../testing/selftests/bpf/prog_tests/cgroup_v1v2.c | 13 +++++++++---- .../testing/selftests/bpf/progs/connect4_dropper.c | 4 +++- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c b/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c index 64abba72ac10..37c1cc52ed98 100644 --- a/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c +++ b/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c @@ -10,12 +10,18 @@ static int run_test(int cgroup_fd, int server_fd, bool classid) { struct connect4_dropper *skel; - int fd, err = 0; + int fd, err = 0, port; skel = connect4_dropper__open_and_load(); if (!ASSERT_OK_PTR(skel, "skel_open")) return -1; + port = get_socket_local_port(server_fd); + if (!ASSERT_GE(port, 0, "get_socket_local_port")) + return -1; + + skel->bss->port = ntohs(port); + skel->links.connect_v4_dropper = bpf_program__attach_cgroup(skel->progs.connect_v4_dropper, cgroup_fd); @@ -48,10 +54,9 @@ void test_cgroup_v1v2(void) { struct network_helper_opts opts = {}; int server_fd, client_fd, cgroup_fd; - static const int port = 60120; /* Step 1: Check base connectivity works without any BPF. */ - server_fd = start_server(AF_INET, SOCK_STREAM, NULL, port, 0); + server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0); if (!ASSERT_GE(server_fd, 0, "server_fd")) return; client_fd = connect_to_fd_opts(server_fd, &opts); @@ -66,7 +71,7 @@ void test_cgroup_v1v2(void) cgroup_fd = test__join_cgroup("/connect_dropper"); if (!ASSERT_GE(cgroup_fd, 0, "cgroup_fd")) return; - server_fd = start_server(AF_INET, SOCK_STREAM, NULL, port, 0); + server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0); if (!ASSERT_GE(server_fd, 0, "server_fd")) { close(cgroup_fd); return; diff --git a/tools/testing/selftests/bpf/progs/connect4_dropper.c b/tools/testing/selftests/bpf/progs/connect4_dropper.c index d3f4c5e4fb69..a3819a5d09c8 100644 --- a/tools/testing/selftests/bpf/progs/connect4_dropper.c +++ b/tools/testing/selftests/bpf/progs/connect4_dropper.c @@ -13,12 +13,14 @@ #define VERDICT_REJECT 0 #define VERDICT_PROCEED 1 +int port; + SEC("cgroup/connect4") int connect_v4_dropper(struct bpf_sock_addr *ctx) { if (ctx->type != SOCK_STREAM) return VERDICT_PROCEED; - if (ctx->user_port == bpf_htons(60120)) + if (ctx->user_port == bpf_htons(port)) return VERDICT_REJECT; return VERDICT_PROCEED; }