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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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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/test_skb_helpers.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/test_skb_helpers.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_skb_helpers.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_skb_helpers.c b/tools/testing/selftests/bpf/progs/test_skb_helpers.c new file mode 100644 index 000000000..bb3fbf1a2 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_skb_helpers.c @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_endian.h> + +#define TEST_COMM_LEN 16 + +struct { + __uint(type, BPF_MAP_TYPE_CGROUP_ARRAY); + __uint(max_entries, 1); + __type(key, u32); + __type(value, u32); +} cgroup_map SEC(".maps"); + +char _license[] SEC("license") = "GPL"; + +SEC("classifier/test_skb_helpers") +int test_skb_helpers(struct __sk_buff *skb) +{ + struct task_struct *task; + char comm[TEST_COMM_LEN]; + __u32 tpid; + + task = (struct task_struct *)bpf_get_current_task(); + bpf_probe_read_kernel(&tpid , sizeof(tpid), &task->tgid); + bpf_probe_read_kernel_str(&comm, sizeof(comm), &task->comm); + return 0; +} |