From patchwork Thu May 9 15:49:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthieu Baerts X-Patchwork-Id: 13659837 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4D9263BBE3; Thu, 9 May 2024 15:49:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715269790; cv=none; b=MNDoYEvoXTyG5icETN50RpjBQZNi/aKE4C7AeNQ+NlySDiRiJqBdw3Umj03+L58qkxzFZbho+5m8GoaX2rlnPeYwXUmX4T0fuVPQ5z41+Cb/XFm+bj1AuJUYCYYyDaWjt6jCU1uAPXSNiGaRkinsgK0ijAEJMhYgdVxaSVSXuvg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715269790; c=relaxed/simple; bh=fwWU1y6Fq/raMfRnXEAPArvOPb7WTnJwfEnbbmHKMMo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WUoNPF55jlTkfpO0bGIAEyuH/GPBZ9x7MWGNiR4D4/E5wjBZEXcKBE2IzXOFv/nk6Q/vmETvTps/gG782/kND38JdzyCWRRL/UDMrQsWfr4ds+iolOEvBxSH7JGPX83WVCD7MkwpIRx5j59oxZ845Z+n0D3yjn6xHfsXHNo+2co= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DGZLxob+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DGZLxob+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3ECA9C4AF08; Thu, 9 May 2024 15:49:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715269789; bh=fwWU1y6Fq/raMfRnXEAPArvOPb7WTnJwfEnbbmHKMMo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=DGZLxob+DWdDmZ5oINztgCw1wZDvVf7ay3e08FbmMxGfabdWnVGjsr/lJ9KG426S7 wg+KfoQ4Z/+iqifBNK0JoLlorU5KZOd3cpJyuJVz74UrafrYr4I65+pD0cQYVZaeGN dWUhGRz4ZOMRspdGYR/iXnafviYJTUSE51AkUCP4oV7LN0cEyfT1xD2eYIlSxtaSPE twYlWky0+v6Cg/yahrotiJx2RSOlKVpc+6atB1XCKhquNQ4eRPcrof1fNTrg+eVBzH PTdK7gKRXAde0AD9m4KlGAJYY3iiMpxmiBgvltsSKaRQR+AlaWDbopABONHHbgJgHY fNvr8wHGfrJbg== From: "Matthieu Baerts (NGI0)" Date: Thu, 09 May 2024 17:49:12 +0200 Subject: [PATCH bpf-next v2 2/2] selftests/bpf: Add mptcp subflow subtest Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240509-upstream-bpf-next-20240506-mptcp-subflow-test-v2-2-4048c2948665@kernel.org> References: <20240509-upstream-bpf-next-20240506-mptcp-subflow-test-v2-0-4048c2948665@kernel.org> In-Reply-To: <20240509-upstream-bpf-next-20240506-mptcp-subflow-test-v2-0-4048c2948665@kernel.org> To: mptcp@lists.linux.dev, Mat Martineau , Geliang Tang , Andrii Nakryiko , Eduard Zingerman , Mykola Lysenko , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, "Matthieu Baerts (NGI0)" , Geliang Tang X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=4451; i=matttbe@kernel.org; h=from:subject:message-id; bh=LJOvAclIqDeTdcev8kuUSRjihzhLlQDft5mKWsBKgVA=; b=kA0DAAgB9reCT0JpoHMByyZiAGY88I6gJC+qoBHY0rayM2/i1+mgE4r9HTrzf1Byy6x2nsshU 4kCMwQAAQgAHRYhBOjLhfdodwV6bif3eva3gk9CaaBzBQJmPPCOAAoJEPa3gk9CaaBz13YP/RDY XXwOC+86HWPGvJ10RvVL4e/1himpNFmzBbou2tqHBkr19qD0Ji2xmqnnI4LsY+QLsxhBEcM+8BZ ATdMxxXkhvTHKcyKOaqnpY0mNvZd/4ByQYia0Ykh2nDzsVwRXV3S3z4QEPpG1Qq/3OLBSrd/YJX bHU0hGII1occkeYG0LOZU/I0I00Yb5PjqswKtce49ruVgFfpIr+HmVGyvY70dwGY8Q8gMHoWhGq Sx1oilBRsglXGT7llNl/YZQ8advZdFmvjRkgyZYaah+2ESHHeXksAFTTlSkaaDFdESc+0iKaxcp hUc5buOlJidc0cq6lahyh82cnpNGtEYWd/QvvWe3u50/yFGKSojgP4NQbuWVUVVe7KXIr1WhNDH R0hT5CssUmARyzdtDO3Wzq2fbYagkCjPyk59eyCb5pVgWavOfXHCEOGrPdz13+XEObun2h1XZ/W 3Gw0halfqVsMr+MgL1l/HoTqDz/6wVIf+y6UX386ooBx3xCYt9OScNCYoE+zfOemsc1QPBbc3wj hSq+44GN/deXfASymVFiAGxLea0fRceRmWotMTM8/FfIDGflHcnqyjSh4tjMTB45hnnicDgucLw ayVYb6vXpR/sxXTdWQE94pDgUUmYnwEKsOP5fAj0x+2m+m9/qEtDYCaqGk8QTza1ytt9TRPEGAg Wo0/h X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 From: Geliang Tang This patch adds a subtest named test_subflow to load and verify the newly added mptcp subflow example in test_mptcp. Add a helper endpoint_init() to add a new subflow endpoint. Add another helper ss_search() to verify the fwmark and congestion values set by mptcp_subflow prog using setsockopts. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/76 Signed-off-by: Geliang Tang Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) --- tools/testing/selftests/bpf/prog_tests/mptcp.c | 109 +++++++++++++++++++++++++ 1 file changed, 109 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c index 274d2e033e39..6039b0ff3801 100644 --- a/tools/testing/selftests/bpf/prog_tests/mptcp.c +++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c @@ -9,8 +9,12 @@ #include "network_helpers.h" #include "mptcp_sock.skel.h" #include "mptcpify.skel.h" +#include "mptcp_subflow.skel.h" #define NS_TEST "mptcp_ns" +#define ADDR_1 "10.0.1.1" +#define ADDR_2 "10.0.1.2" +#define PORT_1 10001 #ifndef IPPROTO_MPTCP #define IPPROTO_MPTCP 262 @@ -340,10 +344,115 @@ static void test_mptcpify(void) close(cgroup_fd); } +static int endpoint_init(char *flags) +{ + SYS(fail, "ip -net %s link add veth1 type veth peer name veth2", NS_TEST); + SYS(fail, "ip -net %s addr add %s/24 dev veth1", NS_TEST, ADDR_1); + SYS(fail, "ip -net %s link set dev veth1 up", NS_TEST); + SYS(fail, "ip -net %s addr add %s/24 dev veth2", NS_TEST, ADDR_2); + SYS(fail, "ip -net %s link set dev veth2 up", NS_TEST); + SYS(fail, "ip -net %s mptcp endpoint add %s %s", NS_TEST, ADDR_2, flags); + + return 0; +fail: + return -1; +} + +static int _ss_search(char *src, char *dst, char *port, char *keyword) +{ + char cmd[128]; + int n; + + n = snprintf(cmd, sizeof(cmd), + "ip netns exec %s ss -Menita src %s dst %s %s %d | grep -q '%s'", + NS_TEST, src, dst, port, PORT_1, keyword); + if (n < 0 || n >= sizeof(cmd)) + return -1; + + return system(cmd); +} + +static int ss_search(char *src, char *keyword) +{ + return _ss_search(src, ADDR_1, "dport", keyword); +} + +static void run_subflow(char *new) +{ + int server_fd, client_fd, err; + char cc[TCP_CA_NAME_MAX]; + socklen_t len = sizeof(cc); + + server_fd = start_mptcp_server(AF_INET, ADDR_1, PORT_1, 0); + if (!ASSERT_GE(server_fd, 0, "start_mptcp_server")) + return; + + client_fd = connect_to_fd(server_fd, 0); + if (!ASSERT_GE(client_fd, 0, "connect to fd")) + goto fail; + + err = getsockopt(server_fd, SOL_TCP, TCP_CONGESTION, cc, &len); + if (!ASSERT_OK(err, "getsockopt(srv_fd, TCP_CONGESTION)")) + goto fail; + + send_byte(client_fd); + + ASSERT_OK(ss_search(ADDR_1, "fwmark:0x1"), "ss_search fwmark:0x1"); + ASSERT_OK(ss_search(ADDR_2, "fwmark:0x2"), "ss_search fwmark:0x2"); + ASSERT_OK(ss_search(ADDR_1, new), "ss_search new cc"); + ASSERT_OK(ss_search(ADDR_2, cc), "ss_search default cc"); + + close(client_fd); +fail: + close(server_fd); +} + +static void test_subflow(void) +{ + int cgroup_fd, prog_fd, err; + struct mptcp_subflow *skel; + struct nstoken *nstoken; + + cgroup_fd = test__join_cgroup("/mptcp_subflow"); + if (!ASSERT_GE(cgroup_fd, 0, "join_cgroup: mptcp_subflow")) + return; + + skel = mptcp_subflow__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open_load: mptcp_subflow")) + goto close_cgroup; + + err = mptcp_subflow__attach(skel); + if (!ASSERT_OK(err, "skel_attach: mptcp_subflow")) + goto skel_destroy; + + prog_fd = bpf_program__fd(skel->progs.mptcp_subflow); + err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_SOCK_OPS, 0); + if (!ASSERT_OK(err, "prog_attach")) + goto skel_destroy; + + nstoken = create_netns(); + if (!ASSERT_OK_PTR(nstoken, "create_netns: mptcp_subflow")) + goto skel_destroy; + + if (!ASSERT_OK(endpoint_init("subflow"), "endpoint_init")) + goto close_netns; + + run_subflow(skel->data->cc); + +close_netns: + cleanup_netns(nstoken); +skel_destroy: + mptcp_subflow__destroy(skel); +close_cgroup: + close(cgroup_fd); +} + void test_mptcp(void) { if (test__start_subtest("base")) test_base(); if (test__start_subtest("mptcpify")) test_mptcpify(); + if (test__start_subtest("subflow")) + test_subflow(); }