7e86a8c4ac
Implement a trivial iterator returning same specified integer value N times as part of bpf_testmod kernel module. Add selftests to validate everything works end to end. We also reuse these tests as "verification-only" tests to validate that kernel prints the state of custom kernel module-defined iterator correctly: fp-16=iter_testmod_seq(ref_id=1,state=drained,depth=0) "testmod_seq" part is an iterator type, and is coming from module's BTF data dynamically at runtime. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20230308184121.1165081-9-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
31 lines
510 B
C
31 lines
510 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2020 Facebook */
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#ifndef _BPF_TESTMOD_H
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#define _BPF_TESTMOD_H
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#include <linux/types.h>
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struct bpf_testmod_test_read_ctx {
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char *buf;
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loff_t off;
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size_t len;
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};
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struct bpf_testmod_test_write_ctx {
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char *buf;
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loff_t off;
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size_t len;
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};
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struct bpf_testmod_test_writable_ctx {
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bool early_ret;
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int val;
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};
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/* BPF iter that returns *value* *n* times in a row */
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struct bpf_iter_testmod_seq {
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s64 value;
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int cnt;
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};
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#endif /* _BPF_TESTMOD_H */
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