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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/bpf/prog_tests/cgroup_skb_sk_lookup.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/cgroup_skb_sk_lookup.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/cgroup_skb_sk_lookup.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_skb_sk_lookup.c b/tools/testing/selftests/bpf/prog_tests/cgroup_skb_sk_lookup.c new file mode 100644 index 000000000..464edc1c1 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/cgroup_skb_sk_lookup.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Facebook + +#include <test_progs.h> + +#include "network_helpers.h" +#include "cgroup_skb_sk_lookup_kern.skel.h" + +static void run_lookup_test(__u16 *g_serv_port, int out_sk) +{ + int serv_sk = -1, in_sk = -1, serv_in_sk = -1, err; + struct sockaddr_in6 addr = {}; + socklen_t addr_len = sizeof(addr); + __u32 duration = 0; + + serv_sk = start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0); + if (CHECK(serv_sk < 0, "start_server", "failed to start server\n")) + return; + + err = getsockname(serv_sk, (struct sockaddr *)&addr, &addr_len); + if (CHECK(err, "getsockname", "errno %d\n", errno)) + goto cleanup; + + *g_serv_port = addr.sin6_port; + + /* Client outside of test cgroup should fail to connect by timeout. */ + err = connect_fd_to_fd(out_sk, serv_sk, 1000); + if (CHECK(!err || errno != EINPROGRESS, "connect_fd_to_fd", + "unexpected result err %d errno %d\n", err, errno)) + goto cleanup; + + /* Client inside test cgroup should connect just fine. */ + in_sk = connect_to_fd(serv_sk, 0); + if (CHECK(in_sk < 0, "connect_to_fd", "errno %d\n", errno)) + goto cleanup; + + serv_in_sk = accept(serv_sk, NULL, NULL); + if (CHECK(serv_in_sk < 0, "accept", "errno %d\n", errno)) + goto cleanup; + +cleanup: + close(serv_in_sk); + close(in_sk); + close(serv_sk); +} + +static void run_cgroup_bpf_test(const char *cg_path, int out_sk) +{ + struct cgroup_skb_sk_lookup_kern *skel; + struct bpf_link *link; + __u32 duration = 0; + int cgfd = -1; + + skel = cgroup_skb_sk_lookup_kern__open_and_load(); + if (CHECK(!skel, "skel_open_load", "open_load failed\n")) + return; + + cgfd = test__join_cgroup(cg_path); + if (CHECK(cgfd < 0, "cgroup_join", "cgroup setup failed\n")) + goto cleanup; + + link = bpf_program__attach_cgroup(skel->progs.ingress_lookup, cgfd); + if (CHECK(IS_ERR(link), "cgroup_attach", "err: %ld\n", PTR_ERR(link))) + goto cleanup; + + run_lookup_test(&skel->bss->g_serv_port, out_sk); + + bpf_link__destroy(link); + +cleanup: + close(cgfd); + cgroup_skb_sk_lookup_kern__destroy(skel); +} + +void test_cgroup_skb_sk_lookup(void) +{ + const char *cg_path = "/foo"; + int out_sk; + + /* Create a socket before joining testing cgroup so that its cgroup id + * differs from that of testing cgroup. Moving selftests process to + * testing cgroup won't change cgroup id of an already created socket. + */ + out_sk = socket(AF_INET6, SOCK_STREAM, 0); + if (CHECK_FAIL(out_sk < 0)) + return; + + run_cgroup_bpf_test(cg_path, out_sk); + + close(out_sk); +} |