diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /tools/testing/selftests/bpf/progs/test_prog_array_init.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_prog_array_init.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_prog_array_init.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_prog_array_init.c b/tools/testing/selftests/bpf/progs/test_prog_array_init.c new file mode 100644 index 000000000..2cd138356 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_prog_array_init.c @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2021 Hengqi Chen */ + +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> + +const volatile pid_t my_pid = 0; +int value = 0; + +SEC("raw_tp/sys_enter") +int tailcall_1(void *ctx) +{ + value = 42; + return 0; +} + +struct { + __uint(type, BPF_MAP_TYPE_PROG_ARRAY); + __uint(max_entries, 2); + __uint(key_size, sizeof(__u32)); + __array(values, int (void *)); +} prog_array_init SEC(".maps") = { + .values = { + [1] = (void *)&tailcall_1, + }, +}; + +SEC("raw_tp/sys_enter") +int entry(void *ctx) +{ + pid_t pid = bpf_get_current_pid_tgid() >> 32; + + if (pid != my_pid) + return 0; + + bpf_tail_call(ctx, &prog_array_init, 1); + return 0; +} |