linux-stable/tools/testing/selftests/bpf/progs/test_skb_helpers.c
Andrii Nakryiko c22bdd2825 selftests/bpf: Switch SEC("classifier*") usage to a strict SEC("tc")
Convert all SEC("classifier*") uses to a new and strict SEC("tc")
section name. In reference_tracking selftests switch from ambiguous
searching by program title (section name) to non-ambiguous searching by
name in some selftests, getting closer to completely removing
bpf_object__find_program_by_title().

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-4-andrii@kernel.org
2021-09-28 13:51:19 -07:00

28 lines
643 B
C

// 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("tc")
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;
}