127e7dca42
Use bpf_prog_test_run_opts to test the skb_load_bytes function. Tests the behavior when offset is greater than INT_MAX or a normal value. Signed-off-by: Liu Jian <liujian56@huawei.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20220416105801.88708-4-liujian56@huawei.com
46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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#include <network_helpers.h>
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#include "skb_load_bytes.skel.h"
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void test_skb_load_bytes(void)
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{
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struct skb_load_bytes *skel;
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int err, prog_fd, test_result;
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struct __sk_buff skb = { 0 };
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LIBBPF_OPTS(bpf_test_run_opts, tattr,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.ctx_in = &skb,
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.ctx_size_in = sizeof(skb),
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);
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skel = skb_load_bytes__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
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return;
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prog_fd = bpf_program__fd(skel->progs.skb_process);
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if (!ASSERT_GE(prog_fd, 0, "prog_fd"))
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goto out;
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skel->bss->load_offset = (uint32_t)(-1);
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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if (!ASSERT_OK(err, "bpf_prog_test_run_opts"))
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goto out;
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test_result = skel->bss->test_result;
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if (!ASSERT_EQ(test_result, -EFAULT, "offset -1"))
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goto out;
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skel->bss->load_offset = (uint32_t)10;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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if (!ASSERT_OK(err, "bpf_prog_test_run_opts"))
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goto out;
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test_result = skel->bss->test_result;
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if (!ASSERT_EQ(test_result, 0, "offset 10"))
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goto out;
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out:
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skb_load_bytes__destroy(skel);
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}
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