| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | |
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| 3 | #include <linux/bpf.h> |
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| 4 | #include <bpf/bpf_helpers.h> |
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| 5 | #include "bpf_misc.h" |
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| 6 | |
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| 7 | SEC("netfilter" ) |
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| 8 | __description("bpf_exit with invalid return code. test1" ) |
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| 9 | __failure __msg("R0 is not a known value" ) |
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| 10 | __naked void with_invalid_return_code_test1(void) |
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| 11 | { |
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| 12 | asm volatile (" \ |
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| 13 | r0 = *(u64*)(r1 + 0); \ |
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| 14 | exit; \ |
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| 15 | " ::: __clobber_all); |
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| 16 | } |
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| 17 | |
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| 18 | SEC("netfilter" ) |
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| 19 | __description("bpf_exit with valid return code. test2" ) |
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| 20 | __success |
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| 21 | __naked void with_valid_return_code_test2(void) |
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| 22 | { |
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| 23 | asm volatile (" \ |
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| 24 | r0 = 0; \ |
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| 25 | exit; \ |
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| 26 | " ::: __clobber_all); |
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| 27 | } |
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| 28 | |
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| 29 | SEC("netfilter" ) |
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| 30 | __description("bpf_exit with valid return code. test3" ) |
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| 31 | __success |
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| 32 | __naked void with_valid_return_code_test3(void) |
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| 33 | { |
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| 34 | asm volatile (" \ |
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| 35 | r0 = 1; \ |
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| 36 | exit; \ |
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| 37 | " ::: __clobber_all); |
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| 38 | } |
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| 39 | |
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| 40 | SEC("netfilter" ) |
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| 41 | __description("bpf_exit with invalid return code. test4" ) |
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| 42 | __failure __msg("R0 has smin=2 smax=2 should have been in [0, 1]" ) |
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| 43 | __naked void with_invalid_return_code_test4(void) |
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| 44 | { |
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| 45 | asm volatile (" \ |
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| 46 | r0 = 2; \ |
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| 47 | exit; \ |
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| 48 | " ::: __clobber_all); |
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| 49 | } |
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| 50 | |
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