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5d8d6634cc
Add a new selftest, local_kptr_stash, which uses bpf_kptr_xchg to stash
a bpf_obj_new-allocated object in a map. Test the following scenarios:
* Stash two rb_nodes in an arraymap, don't unstash them, rely on map
free to destruct them
* Stash two rb_nodes in an arraymap, unstash the second one in a
separate program, rely on map free to destruct first
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20230310230743.2320707-4-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
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#include <test_progs.h>
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#include <network_helpers.h>
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#include "local_kptr_stash.skel.h"
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static void test_local_kptr_stash_simple(void)
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{
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LIBBPF_OPTS(bpf_test_run_opts, opts,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.repeat = 1,
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);
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struct local_kptr_stash *skel;
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int ret;
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skel = local_kptr_stash__open_and_load();
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if (!ASSERT_OK_PTR(skel, "local_kptr_stash__open_and_load"))
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return;
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ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.stash_rb_nodes), &opts);
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ASSERT_OK(ret, "local_kptr_stash_add_nodes run");
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ASSERT_OK(opts.retval, "local_kptr_stash_add_nodes retval");
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local_kptr_stash__destroy(skel);
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}
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static void test_local_kptr_stash_unstash(void)
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{
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LIBBPF_OPTS(bpf_test_run_opts, opts,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.repeat = 1,
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);
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struct local_kptr_stash *skel;
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int ret;
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skel = local_kptr_stash__open_and_load();
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if (!ASSERT_OK_PTR(skel, "local_kptr_stash__open_and_load"))
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return;
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ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.stash_rb_nodes), &opts);
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ASSERT_OK(ret, "local_kptr_stash_add_nodes run");
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ASSERT_OK(opts.retval, "local_kptr_stash_add_nodes retval");
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ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.unstash_rb_node), &opts);
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ASSERT_OK(ret, "local_kptr_stash_add_nodes run");
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ASSERT_EQ(opts.retval, 42, "local_kptr_stash_add_nodes retval");
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local_kptr_stash__destroy(skel);
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}
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void test_local_kptr_stash_success(void)
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{
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if (test__start_subtest("local_kptr_stash_simple"))
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test_local_kptr_stash_simple();
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if (test__start_subtest("local_kptr_stash_unstash"))
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test_local_kptr_stash_unstash();
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}
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