360301a6c2
test_global_func[12] - check 512 stack limit.
test_global_func[34] - check 8 frame call chain limit.
test_global_func5 - check that non-ctx pointer cannot be passed into
a function that expects context.
test_global_func6 - check that ctx pointer is unmodified.
test_global_func7 - check that global function returns scalar.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200110064124.1760511-7-ast@kernel.org
66 lines
974 B
C
66 lines
974 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2020 Facebook */
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#include <stddef.h>
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#include <linux/bpf.h>
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#include "bpf_helpers.h"
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__attribute__ ((noinline))
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int f1(struct __sk_buff *skb)
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{
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return skb->len;
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}
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__attribute__ ((noinline))
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int f2(int val, struct __sk_buff *skb)
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{
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return f1(skb) + val;
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}
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__attribute__ ((noinline))
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int f3(int val, struct __sk_buff *skb, int var)
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{
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return f2(var, skb) + val;
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}
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__attribute__ ((noinline))
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int f4(struct __sk_buff *skb)
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{
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return f3(1, skb, 2);
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}
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__attribute__ ((noinline))
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int f5(struct __sk_buff *skb)
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{
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return f4(skb);
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}
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__attribute__ ((noinline))
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int f6(struct __sk_buff *skb)
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{
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return f5(skb);
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}
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__attribute__ ((noinline))
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int f7(struct __sk_buff *skb)
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{
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return f6(skb);
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}
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#ifndef NO_FN8
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__attribute__ ((noinline))
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int f8(struct __sk_buff *skb)
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{
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return f7(skb);
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}
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#endif
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SEC("classifier/test")
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int test_cls(struct __sk_buff *skb)
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{
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#ifndef NO_FN8
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return f8(skb);
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#else
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return f7(skb);
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#endif
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}
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