linux/tools/testing/selftests/bpf/progs/tailcall2.c
Toke Høiland-Jørgensen 3e689141e6 selftests: Use consistent include paths for libbpf
Fix all selftests to include libbpf header files with the bpf/ prefix, to
be consistent with external users of the library. Also ensure that all
includes of exported libbpf header files (those that are exported on 'make
install' of the library) use bracketed includes instead of quoted.

To not break the build, keep the old include path until everything has been
changed to the new one; a subsequent patch will remove that.

Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
2020-01-20 16:37:45 -08:00

60 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
struct {
__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
__uint(max_entries, 5);
__uint(key_size, sizeof(__u32));
__uint(value_size, sizeof(__u32));
} jmp_table SEC(".maps");
SEC("classifier/0")
int bpf_func_0(struct __sk_buff *skb)
{
bpf_tail_call(skb, &jmp_table, 1);
return 0;
}
SEC("classifier/1")
int bpf_func_1(struct __sk_buff *skb)
{
bpf_tail_call(skb, &jmp_table, 2);
return 1;
}
SEC("classifier/2")
int bpf_func_2(struct __sk_buff *skb)
{
return 2;
}
SEC("classifier/3")
int bpf_func_3(struct __sk_buff *skb)
{
bpf_tail_call(skb, &jmp_table, 4);
return 3;
}
SEC("classifier/4")
int bpf_func_4(struct __sk_buff *skb)
{
bpf_tail_call(skb, &jmp_table, 3);
return 4;
}
SEC("classifier")
int entry(struct __sk_buff *skb)
{
bpf_tail_call(skb, &jmp_table, 0);
/* Check multi-prog update. */
bpf_tail_call(skb, &jmp_table, 2);
/* Check tail call limit. */
bpf_tail_call(skb, &jmp_table, 3);
return 3;
}
char __license[] SEC("license") = "GPL";
int _version SEC("version") = 1;