diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2021-12-17 11:33:33 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2021-12-17 11:33:33 +0100 |
| commit | 1758047057dbe329be712a31b79db7151b5871f8 (patch) | |
| tree | 00203eb55328f2feda70b3d37c964287b364796f /tools/testing/selftests/bpf/progs/tailcall6.c | |
| parent | bcae3af286f49bf4f6cda03f165fbe530f4a6bed (diff) | |
| parent | 1c405ca11bf563de1725e5ecfb4a74ee289d2ee9 (diff) | |
Merge drm/drm-next into drm-misc-next-fixes
Backmerging to bring drm-misc-next-fixes up to the latest state for
the current release cycle.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/tailcall6.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/tailcall6.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/tailcall6.c b/tools/testing/selftests/bpf/progs/tailcall6.c new file mode 100644 index 000000000000..d77b8abd62f3 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tailcall6.c @@ -0,0 +1,34 @@ +// 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, which; + +SEC("tc") +int classifier_0(struct __sk_buff *skb) +{ + count++; + if (__builtin_constant_p(which)) + __bpf_unreachable(); + bpf_tail_call(skb, &jmp_table, which); + return 1; +} + +SEC("tc") +int entry(struct __sk_buff *skb) +{ + if (__builtin_constant_p(which)) + __bpf_unreachable(); + bpf_tail_call(skb, &jmp_table, which); + return 0; +} + +char __license[] SEC("license") = "GPL"; |
