From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- tools/testing/selftests/bpf/progs/tailcall4.c | 33 +++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/tailcall4.c (limited to 'tools/testing/selftests/bpf/progs/tailcall4.c') diff --git a/tools/testing/selftests/bpf/progs/tailcall4.c b/tools/testing/selftests/bpf/progs/tailcall4.c new file mode 100644 index 000000000..f82075b47 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tailcall4.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0 +#include + +#include + +struct { + __uint(type, BPF_MAP_TYPE_PROG_ARRAY); + __uint(max_entries, 3); + __uint(key_size, sizeof(__u32)); + __uint(value_size, sizeof(__u32)); +} jmp_table SEC(".maps"); + +static volatile int selector; + +#define TAIL_FUNC(x) \ + SEC("classifier/" #x) \ + int bpf_func_##x(struct __sk_buff *skb) \ + { \ + return x; \ + } +TAIL_FUNC(0) +TAIL_FUNC(1) +TAIL_FUNC(2) + +SEC("classifier") +int entry(struct __sk_buff *skb) +{ + bpf_tail_call(skb, &jmp_table, selector); + return 3; +} + +char __license[] SEC("license") = "GPL"; +int _version SEC("version") = 1; -- cgit v1.2.3