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This builds up on the existing socket cookie test which checks whether the bpf_get_socket_cookie helpers provide the same value in cgroup/connect6 and sockops programs for a socket created by the userspace part of the test. Instead of having an update_cookie sockops program tag a socket local storage with 0xFF, this uses both an update_cookie_sockops program and an update_cookie_tracing program which succesively tag the socket with 0x0F and then 0xF0. Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: KP Singh <kpsingh@kernel.org> Link: https://lore.kernel.org/bpf/20210210111406.785541-5-revest@chromium.org
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2020 Google LLC.
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// Copyright (c) 2018 Facebook
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#include <test_progs.h>
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#include "socket_cookie_prog.skel.h"
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#include "network_helpers.h"
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static int duration;
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struct socket_cookie {
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__u64 cookie_key;
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__u32 cookie_value;
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};
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void test_socket_cookie(void)
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{
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int server_fd = 0, client_fd = 0, cgroup_fd = 0, err = 0;
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socklen_t addr_len = sizeof(struct sockaddr_in6);
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struct socket_cookie_prog *skel;
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__u32 cookie_expected_value;
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struct sockaddr_in6 addr;
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struct socket_cookie val;
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skel = socket_cookie_prog__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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return;
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cgroup_fd = test__join_cgroup("/socket_cookie");
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if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
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goto out;
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skel->links.set_cookie = bpf_program__attach_cgroup(
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skel->progs.set_cookie, cgroup_fd);
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if (!ASSERT_OK_PTR(skel->links.set_cookie, "prog_attach"))
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goto close_cgroup_fd;
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skel->links.update_cookie_sockops = bpf_program__attach_cgroup(
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skel->progs.update_cookie_sockops, cgroup_fd);
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if (!ASSERT_OK_PTR(skel->links.update_cookie_sockops, "prog_attach"))
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goto close_cgroup_fd;
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skel->links.update_cookie_tracing = bpf_program__attach(
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skel->progs.update_cookie_tracing);
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if (!ASSERT_OK_PTR(skel->links.update_cookie_tracing, "prog_attach"))
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goto close_cgroup_fd;
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server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
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if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
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goto close_cgroup_fd;
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client_fd = connect_to_fd(server_fd, 0);
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if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
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goto close_server_fd;
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err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.socket_cookies),
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&client_fd, &val);
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if (!ASSERT_OK(err, "map_lookup(socket_cookies)"))
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goto close_client_fd;
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err = getsockname(client_fd, (struct sockaddr *)&addr, &addr_len);
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if (!ASSERT_OK(err, "getsockname"))
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goto close_client_fd;
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cookie_expected_value = (ntohs(addr.sin6_port) << 8) | 0xFF;
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ASSERT_EQ(val.cookie_value, cookie_expected_value, "cookie_value");
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close_client_fd:
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close(client_fd);
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close_server_fd:
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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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out:
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socket_cookie_prog__destroy(skel);
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}
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