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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-08-29 05:46:18 -04:00
2148794eea
Bump MAX_CALL_FRAMES from 8 to 16 to allow deeper call chains that Rust-BPF requires and update selftests. Link: https://lore.kernel.org/r/20260613180755.29671-1-alexei.starovoitov@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
110 lines
1.7 KiB
C
110 lines
1.7 KiB
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/bpf_helpers.h>
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#include "bpf_misc.h"
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static __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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static __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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static __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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static __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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static __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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static __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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static __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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static __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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static __attribute__ ((noinline))
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int f9(struct __sk_buff *skb)
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{
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return f8(skb);
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}
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static __attribute__ ((noinline))
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int f10(struct __sk_buff *skb)
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{
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return f9(skb);
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}
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static __attribute__ ((noinline))
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int f11(struct __sk_buff *skb)
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{
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return f10(skb);
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}
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static __attribute__ ((noinline))
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int f12(struct __sk_buff *skb)
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{
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return f11(skb);
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}
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static __attribute__ ((noinline))
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int f13(struct __sk_buff *skb)
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{
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return f12(skb);
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}
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static __attribute__ ((noinline))
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int f14(struct __sk_buff *skb)
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{
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return f13(skb);
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}
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static __attribute__ ((noinline))
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int f15(struct __sk_buff *skb)
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{
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return f14(skb);
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}
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static __attribute__ ((noinline))
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int f16(struct __sk_buff *skb)
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{
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return f15(skb);
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}
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SEC("tc")
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__failure __msg("the call stack of 17 frames")
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int global_func3(struct __sk_buff *skb)
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{
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return f16(skb);
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}
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