tools/testing/selftests/bpf/progs/test_sockmap_pass_prog.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/test_sockmap_pass_prog.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/test_sockmap_pass_prog.c
Extension
.c
Size
1149 bytes
Lines
62
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_endian.h>

struct {
	__uint(type, BPF_MAP_TYPE_SOCKMAP);
	__uint(max_entries, 20);
	__type(key, int);
	__type(value, int);
} sock_map_rx SEC(".maps");

struct {
	__uint(type, BPF_MAP_TYPE_SOCKMAP);
	__uint(max_entries, 20);
	__type(key, int);
	__type(value, int);
} sock_map_tx SEC(".maps");

struct {
	__uint(type, BPF_MAP_TYPE_SOCKMAP);
	__uint(max_entries, 20);
	__type(key, int);
	__type(value, int);
} sock_map_msg SEC(".maps");

SEC("sk_skb/stream_verdict")
int prog_skb_verdict(struct __sk_buff *skb)
{
	return SK_PASS;
}

int clone_called;

SEC("sk_skb/stream_verdict")
int prog_skb_verdict_clone(struct __sk_buff *skb)
{
	clone_called = 1;
	return SK_PASS;
}

SEC("sk_skb/stream_parser")
int prog_skb_parser(struct __sk_buff *skb)
{
	return SK_PASS;
}

SEC("sk_skb/stream_verdict")
int prog_skb_verdict_ingress(struct __sk_buff *skb)
{
	int one = 1;

	return bpf_sk_redirect_map(skb, &sock_map_rx, one, BPF_F_INGRESS);
}

SEC("sk_skb/stream_parser")
int prog_skb_verdict_ingress_strp(struct __sk_buff *skb)
{
	return skb->len;
}

char _license[] SEC("license") = "GPL";

Annotation

Implementation Notes