mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
3bc48b56e3
This patch extends the MPTCP test base, to test the new helper bpf_skc_to_mptcp_sock(). Define struct mptcp_sock in bpf_tcp_helpers.h, use bpf_skc_to_mptcp_sock to get the msk socket in progs/mptcp_sock.c and store the infos in socket_storage_map. Get the infos from socket_storage_map in prog_tests/mptcp.c. Add a new function verify_msk() to verify the infos of MPTCP socket, and rename verify_sk() to verify_tsk() to verify TCP socket only. v2: Add CONFIG_MPTCP check for clearer error messages v4: - use ASSERT_* instead of CHECK_FAIL (Andrii) - drop bpf_mptcp_helpers.h (Andrii) v5: - some 'ASSERT_*' were replaced in the next commit by mistake. - Drop CONFIG_MPTCP (Martin) - Use ASSERT_EQ (Andrii) Signed-off-by: Geliang Tang <geliang.tang@suse.com> 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/20220519233016.105670-5-mathew.j.martineau@linux.intel.com
127 lines
2.6 KiB
C
127 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2020, Tessares SA. */
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/* Copyright (c) 2022, SUSE. */
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#include <test_progs.h>
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#include "cgroup_helpers.h"
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#include "network_helpers.h"
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#include "mptcp_sock.skel.h"
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struct mptcp_storage {
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__u32 invoked;
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__u32 is_mptcp;
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};
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static int verify_tsk(int map_fd, int client_fd)
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{
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int err, cfd = client_fd;
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struct mptcp_storage val;
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err = bpf_map_lookup_elem(map_fd, &cfd, &val);
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if (!ASSERT_OK(err, "bpf_map_lookup_elem"))
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return err;
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if (!ASSERT_EQ(val.invoked, 1, "unexpected invoked count"))
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err++;
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if (!ASSERT_EQ(val.is_mptcp, 0, "unexpected is_mptcp"))
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err++;
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return err;
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}
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static int verify_msk(int map_fd, int client_fd)
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{
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int err, cfd = client_fd;
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struct mptcp_storage val;
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err = bpf_map_lookup_elem(map_fd, &cfd, &val);
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if (!ASSERT_OK(err, "bpf_map_lookup_elem"))
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return err;
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if (!ASSERT_EQ(val.invoked, 1, "unexpected invoked count"))
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err++;
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if (!ASSERT_EQ(val.is_mptcp, 1, "unexpected is_mptcp"))
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err++;
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return err;
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}
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static int run_test(int cgroup_fd, int server_fd, bool is_mptcp)
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{
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int client_fd, prog_fd, map_fd, err;
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struct mptcp_sock *sock_skel;
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sock_skel = mptcp_sock__open_and_load();
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if (!ASSERT_OK_PTR(sock_skel, "skel_open_load"))
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return -EIO;
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prog_fd = bpf_program__fd(sock_skel->progs._sockops);
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if (!ASSERT_GE(prog_fd, 0, "bpf_program__fd")) {
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err = -EIO;
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goto out;
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}
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map_fd = bpf_map__fd(sock_skel->maps.socket_storage_map);
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if (!ASSERT_GE(map_fd, 0, "bpf_map__fd")) {
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err = -EIO;
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goto out;
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}
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err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_SOCK_OPS, 0);
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if (!ASSERT_OK(err, "bpf_prog_attach"))
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goto out;
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client_fd = connect_to_fd(server_fd, 0);
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if (!ASSERT_GE(client_fd, 0, "connect to fd")) {
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err = -EIO;
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goto out;
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}
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err += is_mptcp ? verify_msk(map_fd, client_fd) :
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verify_tsk(map_fd, client_fd);
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close(client_fd);
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out:
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mptcp_sock__destroy(sock_skel);
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return err;
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}
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static void test_base(void)
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{
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int server_fd, cgroup_fd;
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cgroup_fd = test__join_cgroup("/mptcp");
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if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup"))
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return;
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/* without MPTCP */
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server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0);
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if (!ASSERT_GE(server_fd, 0, "start_server"))
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goto with_mptcp;
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ASSERT_OK(run_test(cgroup_fd, server_fd, false), "run_test tcp");
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close(server_fd);
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with_mptcp:
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/* with MPTCP */
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server_fd = start_mptcp_server(AF_INET, NULL, 0, 0);
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if (!ASSERT_GE(server_fd, 0, "start_mptcp_server"))
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goto close_cgroup_fd;
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ASSERT_OK(run_test(cgroup_fd, server_fd, true), "run_test mptcp");
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close(server_fd);
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close_cgroup_fd:
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close(cgroup_fd);
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}
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void test_mptcp(void)
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{
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if (test__start_subtest("base"))
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test_base();
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}
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