diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/bpf/progs/tailcall2.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/tailcall2.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/tailcall2.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/tailcall2.c b/tools/testing/selftests/bpf/progs/tailcall2.c new file mode 100644 index 000000000..0431e4fe7 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tailcall2.c @@ -0,0 +1,59 @@ +// 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_static(skb, &jmp_table, 1); + return 0; +} + +SEC("classifier/1") +int bpf_func_1(struct __sk_buff *skb) +{ + bpf_tail_call_static(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_static(skb, &jmp_table, 4); + return 3; +} + +SEC("classifier/4") +int bpf_func_4(struct __sk_buff *skb) +{ + bpf_tail_call_static(skb, &jmp_table, 3); + return 4; +} + +SEC("classifier") +int entry(struct __sk_buff *skb) +{ + bpf_tail_call_static(skb, &jmp_table, 0); + /* Check multi-prog update. */ + bpf_tail_call_static(skb, &jmp_table, 2); + /* Check tail call limit. */ + bpf_tail_call_static(skb, &jmp_table, 3); + return 3; +} + +char __license[] SEC("license") = "GPL"; +int _version SEC("version") = 1; |