diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/tailcall3.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/tailcall3.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/tailcall3.c b/tools/testing/selftests/bpf/progs/tailcall3.c new file mode 100644 index 0000000000..f60bcd7b8d --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tailcall3.c @@ -0,0 +1,30 @@ +// 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, 1); + __uint(key_size, sizeof(__u32)); + __uint(value_size, sizeof(__u32)); +} jmp_table SEC(".maps"); + +int count = 0; + +SEC("tc") +int classifier_0(struct __sk_buff *skb) +{ + count++; + bpf_tail_call_static(skb, &jmp_table, 0); + return 1; +} + +SEC("tc") +int entry(struct __sk_buff *skb) +{ + bpf_tail_call_static(skb, &jmp_table, 0); + return 0; +} + +char __license[] SEC("license") = "GPL"; |